Bird-beaking 

When you insert your thumb, index, and middle fingers into someone's anus or vagina in the shape of a bird beak. With your fingers inserted you open and close the beak while making a crowing sound.

"I was bird-beaking the crap out of your mom last night!"

Bird-beaking by Cab-adam June 18, 2013

Bird Beakin' 

Press bare butt cheecks up against window, make sure some unsuspecting person is on the other side and the deficate (poop) just enough to leave a mark on the window then inhale the shit back into your butthole "bird beak"

Do it on a windshield when someone in the driver seat. Bird Beakin'

Bird Beakin' by Arome69/Dj June 15, 2012

Bird Breaking 

The act of leaping at a flying bird and biting it's wings and feet off.

Me: "Hey Tom, do you want to do some bird breaking after school?"

Tom: "Yeah that sounds like an EpicFartMoment!"

Bird Breaking by WubNub February 3, 2023