rubber up 

to put on a condom before (anal) intercourse.

verb. Primarily British gay usage.

"I stopped to rubber up before I fucked Jimmy in the arse."

"Guys who bareback don't rubber up."

rubber up by stsebastian November 18, 2009

Rubber up your bumper 

To lube up your asshole or someone else's asshole

Hey girl, bend over and rubber up your bumper because you're about to get lifted

Rubber up your bumper by Yep, I did it, so what? May 18, 2016

UP YOUR NOSE WITH A RUBBER HOSE 

Used by Vinny Barbarino, in welcome back kotter, as a scape-goat for extreme frustration, or backed into a corner and no intellegent answer is thought of.

"so where were you last night?"
----
"up your nose with a rubber hose!!!!"

UP YOUR NOSE WITH A RUBBER HOSE by justin vs January 6, 2008

Up and Down Rubber 

To rise and fall whilst connected to another human's body.

"Dude, ahmigosh, Raul and I went up and down the other night."
"Really?"
"Yeah, and not just up and down...but up and down RUBBER!"

Up and Down Rubber by Crustin April 30, 2006

Up ya bum with a rubber thumb 

Rhyming Slang

Like up ya nose with a rubber hose

Hey Suzie up ya bum with a rubber thumb

Up ya bum with a rubber thumb by KcnDave September 8, 2023

Cheeks 

An Irish phrase meaning shit, derived from ass
(Not to be confused with the literal description of one's buttocks)

"Did you hear the song Aylek$ dropped?"
"Hardly. Her music is absolute cheeks."

"My boyfriend say LaFlame is cheeks."
"Tell your boyfriend I said it's his mixtape that's cheeks."

Cheeks by thecartisan April 26, 2020

sans sheriff 

Lawless use of fonts or typography, with no regard to aesthetics or legibility

I'm putting this CV straight in the bin. Written totally sans sheriff.

sans sheriff by Jamarley July 3, 2019