Is a person that is constantly under the influence of methamphetamine. Widely incoherent, doesn't care about their appearance, and makes illogical choices.
Wow, Bobbie is a twack monkey. Look at her running around all twacked out.
The ejaculate of a post vasectomy male.
I walked in on Scott as he shot his monkey pudding all over Reubens chest.
when a girl is so much fatter than her partner that he/she flatlines while having sex
The teacher's gonna be on his case for monkeying about.
The ultimate form of masturbation, the penis rarely survives this
Boldi, why are you leaving, are you going to sleep?
No man, I'm gonna knock the monkey unconcious.
Monkey D. Luffy, the main character of One Piece.
Me: Wow I wonder if Monkey D. Luffy can use gear 3rd on his penis.