backsies day

on september 18th anything someone does to you u have to do back for e.g. if someone steals some of your food you steal some of theirs.

friend: steals one of your chocolate bars
friend 2: hey its backsies day steal one of his
you: omg yes its september 18th

by stair lift September 18, 2021

Backseat Adventures

when you and your s/o go to the backseat to fuck

Boy 1: “Yeah me and Stacy had some backseat adventures last night if yk what I mean”

by ticklethepickle09 November 28, 2021

backseat gelato

Backseat Gelato is when you're tapping someone from behind, and you glaze them with a nice soft-serve dollop between their cheeks as you finish. Ideally preceded by "I hope you're hungry... ".

"Heard you were up camping by the lake with your girl this weekend. Did she finally let you tap that?"

"Hell yeah, we were at it half the night edgin' and when I finally blew I gave her a helping of backseat gelato!"

by Saeryf January 19, 2022

backstabber

Someone that would befriend your worst enemy just to get their face on a stupid fucking billboard, then try to come back claiming to be your ally.

The backstabber wasn't quite the ally or friend that she said she was, if ever you did think she was a friend of yours.

by The Original Agahnim February 2, 2022

Backseat Boyfriend

Someone waiting for you to dump your shitty boyfriend so they can treat you better

Ryan has been such an awful partner lately, I think you need a backseat boyfriend

by Caytain January 6, 2022

Backseat barnstorming

Having sex in the back seat of a car

"Man, the couple across from me in the parking lot is doing some backseat barnstorming"

by Geoff the Jeff February 8, 2022

Backshitter

Someone who shits all over the back of the toilet because their asshole is In the center of their back.

Also if your name is Billy

Billy the backshitter shat all over the back of the toilet again in the shop

by Amishbeard February 17, 2022