A man puts his penis into a woman (or man's) asshole while the taker has to defecate. The taker then defecates and then sucks the poo off the penis.

Then, they make out.
"Mmm, baby, I have to poo."

"I'm in the mood for a green burrito." ;)
by Leahaaaa October 30, 2007
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Something that is scary beyond measure
Last night Becky green burritoed me and i thought I was going to have a heart attack.
by yeet train to swaggsville June 13, 2017
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