An extreme sexual fetish act consisting of anal defecation into one's mouth after a Mouth-to-ass vomiting session.
Man, i love intestinal suck with shirley. Our processed fluids have great culinary chemistry, especially when we've both been eating curry.
Its when you give someone who has just taken a strong laxative an enema by puking in there ass, letting it stay in for a few minutes, and then sucking it out (along with the shit) while swallowing. Like a beer bong.
"oh yeah girl, i can hear those burritos you had for lunch churning in your gut and all i had for lunch was sour cream and salsa, what do you say you let me have a full lunch, and we go back to my room so i can puke in your ass and then suck it out, nothing beats an intestinal suck after all". "Oh yeah my names Johnny, do you come here often"?