In His Ass 

Commonly used by black people in jail.

Some_nub: Man, this place sucks, I got touched by my celly last night.
Some_Black_Guy: In his ass!!!

In His Ass by Deceptik0n July 29, 2005

fingers in his ass

Fingers in his ass is a meme mainly quoted/said by Danganronpa fans on a site called tumblr or Danganronpa fans in general.
The sentence is usually associated with the pairing sansmaeda. There is also a thing called fingers in his all sunday. On Sundays people gather to appreciate the song fingers in ass and sansmaeda. On December 16th 2018, the day before tumblr's adult content ban fans of sansmaeda and fingers in his ass sunday celebrated what was called the "final" fingers in his ass sunday.

Origins:
On july 17th, 2017 user named skeletortilla uploaded a video on tumblr that had Nagito Komaeda from Danganronpa 2 and Sans from Undertale dancing together to a song called "ASSHOLE (Fingerfückung)" made by BotanicSage on youtube.

Kanye west he likes fingers in his ass
It's fingers in his ass sunday!

fingers in his ass by Pupseus December 17, 2018

popped a cap in his ass 

he shot him

English teacher "you have to use proper English when you're writing summaries in your reading log. is 'he popped a cap in his ass' proper English? no"

popped a cap in his ass by applealex December 3, 2009

get in his ass 

Confronting the male head on. Face to face contact with a male

I know that muthafucka was sneaking around, so I had to get in
his ass.

get in his ass by Dee Wright August 5, 2003

sugar in his ass 

When a guy likes dick in his ass. Gay man.

He looks like he has a little sugar in his ass.

sugar in his ass by TheMan600987 May 15, 2016

Fingers in his ass

Fingers in his ass originally was a joke from both the undertale and danganronpa fandoms and features the characters Sans Undertale and Nagito Komoeada.

“Fingers in his ass, fingers in his ass, Kanye west he likes, fingers in his ass.”

Fingers in his ass by BrotherBasil January 6, 2022

capped a pop in his ass

The act of sticking a soda bottle lid in someones rectum, and putting the tip of the bottle up the anus. Turning the bottle till the lid is firmly tightend will conclude the act.

I just capped a pop in his ass, and then gave him a high five.

capped a pop in his ass by jr and jr July 2, 2011