Rumrass 

A person displaying extreme acts of idiocy. This person is the DUMBEST of the dumb.

Rumrass, a person who is most likely mentally challenged.

John: "I lost my phone!"
Joshua: "Where did you leave it?"
John: "I think I left it at school."
Joshua: "Your such a rumass!"

Rumrass by TheAbominable October 24, 2016

Rumpass

non-mexican word for sex

hola seniorita, want to join me for some rumpass?

Rumpass by THEBETTERTWIN May 12, 2011

rumbass 

A dumbass. But a rumbass.

Sarah is a rumbass.

rumbass by kfnceifone May 22, 2021

rumass 

When you drink too much fucking rum and you shit rum profusely

Last night I went too hard at the party and got rumass

rumass by Mcjimmybob October 13, 2021