diff --git a/code/controllers/subsystem/processing/quirks.dm b/code/controllers/subsystem/processing/quirks.dm
index d62edb23..fe1d3eb3 100644
--- a/code/controllers/subsystem/processing/quirks.dm
+++ b/code/controllers/subsystem/processing/quirks.dm
@@ -12,10 +12,13 @@ PROCESSING_SUBSYSTEM_DEF(quirks)
 	var/list/quirk_names_by_path = list()
 	var/list/quirk_points = list()	//Assoc. list of quirk names and their "point cost"; positive numbers are good traits, and negative ones are bad
 	var/list/quirk_objects = list()	//A list of all quirk objects in the game, since some may process
+	var/list/quirk_blacklist = list() //A list a list of quirks that can not be used with each other. Format: list(quirk1,quirk2),list(quirk3,quirk4)
 
 /datum/controller/subsystem/processing/quirks/Initialize(timeofday)
 	if(!quirks.len)
 		SetupQuirks()
+
+	quirk_blacklist = list(list("Blind","Nearsighted"),list("Jolly","Depression","Apathetic","Hypersensitive"),list("Ageusia","Vegetarian","Deviant Tastes"),list("Ananas Affinity","Ananas Aversion"),list("Alcohol Tolerance","Light Drinker"),list("Prosthetic Limb (Left Arm)","Prosthetic Limb (Right Arm)","Prosthetic Limb (Left Leg)","Prosthetic Limb (Right Leg)","Prosthetic Limb"),list("Social Anxiety","Mute"))
 	return ..()
 
 /datum/controller/subsystem/processing/quirks/proc/SetupQuirks()
diff --git a/code/datums/traits/negative.dm b/code/datums/traits/negative.dm
index cfb1341f..a16f551d 100644
--- a/code/datums/traits/negative.dm
+++ b/code/datums/traits/negative.dm
@@ -110,6 +110,15 @@
 	lose_text = "<span class='notice'>You feel awake again.</span>"
 	medical_record_text = "Patient has abnormal sleep study results and is difficult to wake up."
 
+/datum/quirk/hypersensitive
+	name = "Hypersensitive"
+	desc = "For better or worse, everything seems to affect your mood more than it should."
+	value = -1
+	gain_text = "<span class='danger'>You seem to make a big deal out of everything.</span>"
+	lose_text = "<span class='notice'>You don't seem to make a big deal out of everything anymore.</span>"
+	mood_quirk = TRUE //yogs
+	medical_record_text = "Patient demonstrates a high level of emotional volatility."
+
 /datum/quirk/brainproblems
 	name = "Brain Tumor"
 	desc = "You have a little friend in your brain that is slowly destroying it. Better bring some mannitol!"
@@ -241,6 +250,8 @@
 	desc = "An accident caused you to lose one of your limbs. Because of this, you now have a random prosthetic!"
 	value = -1
 	var/slot_string = "limb"
+	var/specific = null
+	medical_record_text = "During physical examination, patient was found to have a prosthetic limb."
 
 /datum/quirk/prosthetic_limb/on_spawn()
 	var/mob/living/carbon/human/H = quirk_holder
@@ -249,6 +260,9 @@
 		limb_slot = pick(BODY_ZONE_L_ARM, BODY_ZONE_R_ARM)
 	else
 		limb_slot = pick(BODY_ZONE_L_ARM, BODY_ZONE_R_ARM, BODY_ZONE_L_LEG, BODY_ZONE_R_LEG)
+		if(specific)
+			limb_slot = specific
+
 	var/obj/item/bodypart/old_part = H.get_bodypart(limb_slot)
 	var/obj/item/bodypart/prosthetic
 	switch(limb_slot)
@@ -297,6 +311,26 @@
 	to_chat(quirk_holder, "<span class='big bold info'>Please note that your dissociation syndrome does NOT give you the right to attack people or otherwise cause any interference to \
 	the round. You are not an antagonist, and the rules will treat you the same as other crewmembers.</span>")
 
+/datum/quirk/prosthetic_limb/left_arm
+	name = "Prosthetic Limb (Left Arm)"
+	desc = "An accident caused you to lose your left arm. Because of this, it's replaced with a prosthetic!"
+	specific = BODY_ZONE_L_ARM
+
+/datum/quirk/prosthetic_limb/right_arm
+	name = "Prosthetic Limb (Right Arm)"
+	desc = "An accident caused you to lose your right arm. Because of this, it's replaced with a prosthetic!"
+	specific = BODY_ZONE_R_ARM
+
+/datum/quirk/prosthetic_limb/left_leg
+	name = "Prosthetic Limb (Left Leg)"
+	desc = "An accident caused you to lose your left leg. Because of this, it's replaced with a prosthetic!"
+	specific = BODY_ZONE_L_LEG
+
+/datum/quirk/prosthetic_limb/right_leg
+	name = "Prosthetic Limb (Right Leg)"
+	desc = "An accident caused you to lose your right leg. Because of this, it's replaced with a prosthetic!"
+	specific = BODY_ZONE_R_LEG
+
 /datum/quirk/social_anxiety
 	name = "Social Anxiety"
 	desc = "Talking to people is very difficult for you, and you often stutter or even lock up."
diff --git a/code/datums/traits/neutral.dm b/code/datums/traits/neutral.dm
index 61b54ca7..4eeddab8 100644
--- a/code/datums/traits/neutral.dm
+++ b/code/datums/traits/neutral.dm
@@ -10,6 +10,29 @@
 	lose_text = "<span class='notice'>You can taste again!</span>"
 	medical_record_text = "Patient suffers from ageusia and is incapable of tasting food or reagents."
 
+/datum/quirk/vegetarian
+	name = "Vegetarian"
+	desc = "You find the idea of eating meat morally and physically repulsive."
+	value = 0
+	gain_text = "<span class='notice'>You feel repulsion at the idea of eating meat.</span>"
+	lose_text = "<span class='notice'>You feel like eating meat isn't that bad.</span>"
+	medical_record_text = "Patient reports a vegetarian diet."
+
+/datum/quirk/vegetarian/add()
+	var/mob/living/carbon/human/H = quirk_holder
+	var/datum/species/species = H.dna.species
+	species.liked_food &= ~MEAT
+	species.disliked_food |= MEAT
+
+/datum/quirk/vegetarian/remove()
+	var/mob/living/carbon/human/H = quirk_holder
+	if(H)
+		var/datum/species/species = H.dna.species
+		if(initial(species.liked_food) & MEAT)
+			species.liked_food |= MEAT
+		if(!initial(species.disliked_food) & MEAT)
+			species.disliked_food &= ~MEAT
+
 /datum/quirk/pineapple_liker
 	name = "Ananas Affinity"
 	desc = "You find yourself greatly enjoying fruits of the ananas genus. You can't seem to ever get enough of their sweet goodness!"
@@ -102,7 +125,7 @@
 	medical_record_text = "Patient never skipped ass day."
 	gain_text = "<span class='notice'>Your ass rivals those of golems.</span>"
 	lose_text = "<span class='notice'>Your butt feels more squishy and slappable.</span>"
-	
+
 /datum/quirk/headpat_slut
 	name = "Headpat Slut"
 	desc = "You like headpats, alot, maybe even a little bit too much. Headpats give you a bigger mood boost and cause arousal"
diff --git a/code/modules/client/preferences.dm b/code/modules/client/preferences.dm
index adaa4c32..84f89b00 100644
--- a/code/modules/client/preferences.dm
+++ b/code/modules/client/preferences.dm
@@ -1515,6 +1515,12 @@ GLOBAL_LIST_EMPTY(preferences_datums)
 				var/quirk = href_list["trait"]
 				if(!SSquirks.quirks[quirk])
 					return
+				for(var/V in SSquirks.quirk_blacklist) //V is a list
+					var/list/L = V
+					for(var/Q in all_quirks)
+						if((quirk in L) && (Q in L) && !(Q == quirk)) //two quirks have lined up in the list of the list of quirks that conflict with each other, so return (see quirks.dm for more details)
+							to_chat(user, "<span class='danger'>[quirk] is incompatible with [Q].</span>")
+							return
 				var/value = SSquirks.quirk_points[quirk]
 				if(value == 0)
 					if(quirk in neutral_quirks)