Where you take one slice out of a pizza pie and then sit on the remaining pie (with the missing slice lined up between your legs) and then cum in the empty slice spot. You can also eat said slice while cumming or cum onto the slice to feed to someone or have sex on the pie so long as someone is sitting on the pizza pie as described above.
Man what’s going on with that pizza pie?! Oh yeah, my roommate Dan has a serious pizza sitting fetish. Third one this week. SMH
by SparksJoy January 1, 2022

by Wampadude October 27, 2016

Eric:Happy thanksgiving guys, I’m heading over to my girlfriends house
Bobby: Why?
Eric: Isn’t it obvious? It’s Sit on a face day idiot.
Bobby: Oh, I gotta head over to my girlfriends as well then
Bobby: Why?
Eric: Isn’t it obvious? It’s Sit on a face day idiot.
Bobby: Oh, I gotta head over to my girlfriends as well then
by A.Kur November 23, 2023

Gorilla sitting — or, gorilla sittin’ — refers to when one or multiple sexual partners is/are engaging in intercourse while straddling the corner edge of a bed or other similar piece of furniture, back arched sitting forward on their knees and fists, fists clenched the same way a gorilla would articulate as it sits in its native lowlands.
“Yeah, no, he was so hot … he brought me to his bed and had me clothes-off gorilla sitting within the first ten minutes I was there.”
Or
“There I was, ass up on the edge of their bed at attention on my knees and first knuckles … they had me gorilla sittin’.”
Or
“There I was, ass up on the edge of their bed at attention on my knees and first knuckles … they had me gorilla sittin’.”
by rothdaddy [JMR] December 19, 2021

Basically, for fuck yourself.
by Tacos69. July 30, 2016

The Start up Sit up of a period of time, hinting at a Stand up before going into a Start up Sit up to make the further Stand up slightly more enjoyable and fun. Not funny at all and shouldn't be brought up, but it still is standing up.
by BrokenMindFever May 16, 2025
