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 2, 2004
You and/or one or more of your gay little buddies, that like to give/take it up the ass regularly
Damn son, you showed him who the ass master around here is.
by CAT_MARK_1 August 22, 2007
ok, well u know when u're walking in the shops, or just just walkin in general, with lots of people around... sometime u get those guys walking RIGHT behind u, right up your ass, they want to pass, but they don't say anything. that's an ass master!

there's an ass master behind us, lets let him pass
by SpotMaster August 29, 2006
(slang) One who is master of all things ass-related.
My boss is being such an ass master today!
by Robert Turner January 29, 2003
Carlos D. of Interpol is a prime example of an ass master.
Wow, you are such an ass master Carlos! lol
by Crash And Burn March 3, 2005
a random insult, a funny insult, a gay person?
Ben Afleck is a ass master
by jizzle dizzle October 14, 2005