diff --git a/code/datums/emote.dm b/code/datums/emote.dm
index d4a7663ee76..9d6b7a7e175 100644
--- a/code/datums/emote.dm
+++ b/code/datums/emote.dm
@@ -57,7 +57,9 @@
 	/// Types that can use this emote regardless of their state.
 	var/list/mob_type_ignore_stat_typecache
 	/// Species types which the emote will be exclusively available to. Should be subclasses of /datum/species
-	var/species_type_whitelist_typecache
+	var/list/species_type_whitelist_typecache
+	/// Species types which the emote will be exclusively not available to. Should be subclasses of /datum/species
+	var/list/species_type_blacklist_typecache
 	/// If we get a target, how do we want to treat it?
 	var/target_behavior = EMOTE_TARGET_BHVR_USE_PARAMS_ANYWAY
 	/// If our target behavior isn't to ignore, what should we look for with targets?
@@ -120,6 +122,7 @@
 	mob_type_blacklist_typecache = typecacheof(mob_type_blacklist_typecache)
 	mob_type_ignore_stat_typecache = typecacheof(mob_type_ignore_stat_typecache)
 	species_type_whitelist_typecache = typecacheof(species_type_whitelist_typecache)
+	species_type_blacklist_typecache = typecacheof(species_type_blacklist_typecache)
 
 /datum/emote/Destroy(force)
 	if(force)
@@ -480,8 +483,13 @@
 
 	if(ishuman(user))
 		var/mob/living/carbon/human/H = user
-		if(species_type_whitelist_typecache && H.dna && !is_type_in_typecache(H.dna.species, species_type_whitelist_typecache))
-			return FALSE
+		if(H.dna)
+			// Since the typecaches might be null as a valid option, it looks like we do need to check that these exist first.
+			if(species_type_whitelist_typecache && !is_type_in_typecache(H.dna.species, species_type_whitelist_typecache))
+				return FALSE
+
+			if(species_type_blacklist_typecache && is_type_in_typecache(H.dna.species, species_type_blacklist_typecache))
+				return FALSE
 
 	if(intentional && only_unintentional)
 		return FALSE
diff --git a/code/modules/mob/living/carbon/human/human_emote.dm b/code/modules/mob/living/carbon/human/human_emote.dm
index 344aafb872d..5265acdf07d 100644
--- a/code/modules/mob/living/carbon/human/human_emote.dm
+++ b/code/modules/mob/living/carbon/human/human_emote.dm
@@ -37,6 +37,17 @@
 	emote_type = EMOTE_VISIBLE
 	hands_use_check = TRUE
 
+/datum/emote/living/carbon/human/crack
+	key = "crack"
+	key_third_person = "cracks"
+	message = "cracks their knuckles."
+	emote_type = EMOTE_AUDIBLE | EMOTE_SOUND
+	// knuckles.ogg by CGEffex. Shortened and cut.
+	// https://freesound.org/people/CGEffex/sounds/93981/
+	sound = "sound/effects/mob_effects/knuckles.ogg"
+	// These species all have overrides, see below
+	species_type_blacklist_typecache = list(/datum/species/slime, /datum/species/machine, /datum/species/plasmaman, /datum/species/skeleton, /datum/species/diona)
+
 /datum/emote/living/carbon/human/cry
 	key = "cry"
 	key_third_person = "cries"
@@ -690,3 +701,34 @@
 	message = "rattles their bones."
 	message_param = "rattles their bones at %t."
 	species_type_whitelist_typecache = list(/datum/species/skeleton, /datum/species/plasmaman)
+
+/datum/emote/living/carbon/human/crack/slime
+	message = "squishes their knuckles!"
+	sound = "sound/effects/slime_squish.ogg"
+	species_type_whitelist_typecache = list(/datum/species/slime)
+	species_type_blacklist_typecache = null
+
+/datum/emote/living/carbon/human/crack/machine
+	message = "cracks their actuators!"
+	sound = "sound/effects/mob_effects/ipc_crunch.ogg"
+	species_type_whitelist_typecache = list(/datum/species/machine)
+	species_type_blacklist_typecache = null
+
+/datum/emote/living/carbon/human/crack/diona
+	message = "cracks a twig!"
+	sound = "sound/effects/mob_effects/diona_crunch.ogg"
+	species_type_whitelist_typecache = list(/datum/species/diona)
+	species_type_blacklist_typecache = null
+	volume = 85  // the sound effect is a bit quiet
+
+/datum/emote/living/carbon/human/crack/skelly
+	message = "cracks something!"  // placeholder
+	species_type_whitelist_typecache = list(/datum/species/skeleton, /datum/species/plasmaman)
+	species_type_blacklist_typecache = null
+
+/datum/emote/living/carbon/human/crack/skelly/run_emote(mob/user, params, type_override, intentional)
+	var/mob/living/carbon/human/H = user
+	var/obj/item/organ/external/bodypart = pick(H.bodyparts)
+	message = "cracks their [bodypart.name]!"
+	. = ..()
+
diff --git a/sound/effects/mob_effects/diona_crunch.ogg b/sound/effects/mob_effects/diona_crunch.ogg
new file mode 100644
index 00000000000..1cfea3c022d
Binary files /dev/null and b/sound/effects/mob_effects/diona_crunch.ogg differ
diff --git a/sound/effects/mob_effects/ipc_crunch.ogg b/sound/effects/mob_effects/ipc_crunch.ogg
new file mode 100644
index 00000000000..225efd5ba60
Binary files /dev/null and b/sound/effects/mob_effects/ipc_crunch.ogg differ
diff --git a/sound/effects/mob_effects/knuckles.ogg b/sound/effects/mob_effects/knuckles.ogg
new file mode 100644
index 00000000000..b61a50fb613
Binary files /dev/null and b/sound/effects/mob_effects/knuckles.ogg differ