RumpMaster

A dude that talks women into anal sex

James: "Dude, look at Dean over there!!!, he just RumpMastered another bitch!!!" Marion: "Ya dawg, he must have stock in Johnson and Johnson with all the lube he buys!!!!!, Damn.

RumpMaster by CDAWG54321 May 1, 2022

rumpster 

One whom has a very large rear end

Hey there Rumpster, get out of my way!

rumpster by Gavin LeDoux August 15, 2007

cum rumpster 

Like a "cum dumpster", only instead of in the vadge you primarily prefer to take it in the butt.

Susanne, you like it in the butt so much. You are a real cum rumpster. And that's the truth!

cum rumpster by Thomas the Cum Elf July 12, 2010

jumpmaster 

the dude who looks after you when you're learning to skydive

that twat of a jumpmaster pushed me out of the plane

jumpmaster by Mat D April 22, 2005

FRUMPMASTER5000 

a nickname used for someone with great amounts of frump; awfully big in size, chunky, or fat.
a FRUMPMASTER5000 is the master of frump; frumpiest of them all.

Did you see Annabelle’s outfit, it’s seriously giving FRUMPMASTER5000!

FRUMPMASTER5000 by oafaloaf December 24, 2022

rimmaster 

The master of rimms

Hey! Look at Blendis, he's a rimmaster.

rimmaster by Byron Stephenson October 30, 2003

pumpmaster

One who participates in the smoking of either cigarettes or pot to the extreme.

Better keep the gear away from the pumpmaster or it'll be the last you see of it.

pumpmaster by Darrell Smith June 17, 2005