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(noun) from the celtic word "aisse" (the anus)and the German word "meister" (sir/lord/master); def.: one who is the lord of more than one ass; the keeper of asses; an ass manager.
I would not pick from that juicy bed of asses until I'd gone ask permission from the resident assmaster.
by Jorge April 04, 2003
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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
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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
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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
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