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18.
The act of filming gay porn on a boat while fishing. It is a play on the words "Bass Masters".
You guys wanna do an Ass Masters at the lake today?
by conleyrich January 09, 2010
 
1.
A dude who's really good at butt-fucking.
Gay dudes call Lamar the "Ass Master!"
by Paul Thundergod June 24, 2003
 
2.
An extremely flaming homosexual person.
Matt is an assmaster, he likes the cock too much.
by Weirdboyscott January 06, 2003
 
3.
An expert at anal sex and often used in connection with a martial arts theme.
Jill's new boyfriend is an eight degree black belt, maximum thickness, assmaster and Jill's ass is his new dojo.
by cartman69 March 30, 2005
 
4.
A man who, through intense dedication of his entire being, has mastered the the pursuit and attainment of the female ass.

The Yoda form of the celebrated Ass Maven.
Wow! Having dedicated his whole being to the pursuit of the female ass, he has truly become an Ass Master!

O, Ass Master - we are not worthy and bow before you! Teach us!
by Joe Pellerin May 13, 2005
 
5.
Someone who is know it all of all things to do with ass. A person who likes to tap that ass and loves asses.
He thinks he's the ass master but he knows nothing about it.
Hey you, Ass master come and get up on this
by Coolata.slut October 01, 2004
 
6.
Name for someone who likes booty
Gary is the "Ass Master"
by ohplz September 29, 2004
 
7.
someone who masters the ass.
Don't be an assmaster, KYLE!
by Maria Peters September 19, 2007