rimseat 

A sitting stool made up of a toilet seat with attached stool legs. It is used so one may sit as their partner lays underneath to be given easy access to give a rimjob. It is also used in scat play.

The more elaborate designs have the toilet seat attached by heavy springs to a metal frame. the springs allows the seated to bounce up and down as the person under tongue fucks their ass. this design is also called a Joy Rider

Get comfortable under my rimseat. you're going to be munching my ass for a long time.

rimseat by LilSwine February 19, 2009

Rimdeath 

Rimdeath (noun) is a humorous term coined within the Diablo 4 gaming community, referring to a risky strategy where players intentionally position themselves in close proximity to the anus of powerful world bosses. This strategy, while potentially absurd and unconventional, is believed by some players to offer a unique advantage, such as exploiting a blind spot or triggering certain boss mechanics. The term "rimdeath" is often used in a lighthearted manner to describe this unconventional tactic or as a humorous anecdote among Diablo 4 players.

You have to rimdeath The Butcher!

Rimdeath by Heerax June 16, 2023

Reverse rimdeath 

Reverse Rimdeath (noun) is a concept originating from the Diablo 4 gaming community, representing a humorous turn of events during a boss encounter. In this scenario, when a player attempts the unconventional strategy of standing close to the anus of a world boss(rimdeath), but it fails or backfires, the boss retaliates in an unexpected manner. The term "reverse rimdeath" is used figuratively to describe the boss's counterattack or punishment, which may involve a sudden and powerful ability or mechanic that catches the player off guard. It serves as a comical twist within the Diablo 4 community, often shared as an amusing anecdote or inside joke among players.

Fuck! The Butcher used reverse rimdeath!

Reverse rimdeath by Heerax June 16, 2023

rim-seat

A rim-seat is an adjustable stool with a toilet seat attached that can be lowered over a guy's mouth so he can lick your asshole and give you a randy rim-job.

My cadet roomie, Matt, bought a rim-seat, and when he wants to be rimmed, he brings it out and has me lie down on my back underneath it so I can give him a rim-seat-gasm with my tongue up his asshole!

rim-seat by USAF Cadet June 2, 2021