I LOVE THE SMELL OF NAPALM IN THE MORNING!

code/datums/mutations/speech.dm

@@ -230,3 +230,16 @@
 	..()
 	owner.grant_language(/datum/language/common)
 	owner.remove_language(/datum/language/beachbum)
+
+/datum/mutation/human/yelling
+	name = "Yelling"
+	desc = "A mutation that forces the host to constantly yell their sentences out."
+	quality = MINOR_NEGATIVE
+	locked = TRUE
+	text_gain_indication = "<span class='danger'>You feel really angry.</span>"
+	text_lose_indication = "<span class='notice'>You feel calmer.</span>"
+
+/datum/mutation/human/yelling/say_mod(message)
+	if(message)
+		message = "[uppertext(replacetext(message, ".", "!"))]!"
+	return (message)