wet backin

When you make her so wet when you're having sex that her back is covered in it, and so is the front of you.

I was so good last night, I had my girl wet backin.

by DatOneFrFr January 11, 2023

Shrimp Backin'

The act of having noticeably poor posture, as a result of long-term slouching, causing a person's figure to resemble that of a shrimp.

Person #1: You trying to get into something tonight?
Person #2: My spine hurts from shrimp backin' all day.
---
Person #1: Man, that dude over there obviously has scoliosis.
Person #2: That's ol' shrimp back, Jack, cut him some slack.

by Thin Glizzy January 16, 2021

Trail backin

The act of shitting on one's facial area

"dayum I'm getting horny after this 2g1c vid... I need to do some trail backin"

by Codythomasbitches August 2, 2009

backin' one out

to let go of a large turd, take a dump, drop a deuce.

"Has anyone seen Fred?"
"Yah, he's on the shitter, backin' one out"

by Capjeff August 31, 2008

Backin' Down

When you've gotten to the point where you cannot smoke anymore nicotine products because your hands will not stop shaking.

"Dude, I'm Backin' Down on this hookah. After a Watterpipe and a cig, I'm done for."

by StonedAssington February 28, 2012

Crack Backin

When u playin a sport or just kickin it around town, and u decide enough is enough and lay the person out on their back, and listen for that crack.

Its fun to crack backin someone on the other team, especially when theyre a bitch and diserve it

by Crack Backin King of Cali November 5, 2009

Backin

Going with, or agreeing with someone

Why u backin wit dat stuff?

Yea, I'm backin wit dat

by PBG.C'S August 26, 2017