the nickname given to bloody diarrhea
Awww! Fuck! I filled the toilet with butt ketchup again!
by Sneaky September 01, 2004
Top Definition
What a girl does once a month.

A great student of the english language, and all its sounds and nuances once said that the most verbally beautiful phrase in the english language is "cellar door." Studying the english language in its current encarnation has led me to the conclusion that "buttketchup" is the single most verbally repulsive word/phrase.
Man, it be whack when my bitch be buttketchupin'.
by Daren Ebacher November 22, 2004
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