(Noun) 2. A person that has his/her head inserted into his/her or his/her signifigant others anus.
(Verb) 1. The act of becoming sexually arosed by one's own bowel movement (number 2) and then using said bowel movement as the means of lubrication in the process of sexually pleasing one's self. Then sometimes they eat it... hard.
Snap, Amanda totally just Sequoia Monkey-ed her vagina after that nasty Dos Amigo's shit that stunk up my bathroom.