A Yum Yum is a sexual act, of when two males stick their fingers in each others rectums & then proceed to sniff their own finger whilst masturbating
Rob: Come here Jonathan you minx, I'm going to give you a right naughty Yum Yum
Jonathan: I can't wait to smell my poo finger, whilst pulling my todger off
A yummy way to agree with something, or to acknowledge someone.
Josh: "can I bum a cig?"
Phil: "yum yum"
When a guy jizz in your mouth and you pass round the cum equally between your fellow colleagues in the room so everyone has a bit of protein before the big night on the town
Patricia: shall we yum yum this jizz in my mouth
Justine: yes okay
Jeff: yes I'm hungry before the night out. Please save me a piece
When you invest in a company and some good news comes out about it, or you make a a lot of money from your position.
"Golden State Warriors is up 367%... yum yum!" - Chamath Palihapitiya (part-owner of Golden State Warriors)
A desireable part of the body used in the act of sexual activity.
The hind parts on an attractive woman. Typically voluptuous in nature.
Hey man, look at shorty over there with the bum yums, her booty's lookin' real healthy right now.