Poo Wave
1 of 3 successive warnings that your anus gives to your entire body before you either shart or collapse in a puddle of poo.
After eating that XXL bowl of PHO' I had 2 massive poo waves before taking a ginormous crap.
Poo-wave
A subtle, nuanced wave while walking your dog to a passerby, while the dog is taking a shit. Alternatively can be used when meeting your man’s friend who is a girl for the first time, and she responds with a glance up and downed eyeroll.
“She wrong for da poo-wave!”
“Did you see the poo-wave that bitch just shot at me?!”
“Did you see the poo-wave that bitch just shot at me?!”