Top Definition
Something or, more frequently, someone that is considered awesome because of the perfection of its ass.

This term was coined by the self-proclaimed queen of all things gangsta, K to the Tizzo

See also: bootilicious and bootylicious
Correct usage:
R: "I have to say, that Beyonce is ass-some!"

Incorrect usage:
G: "watching people work is ass-some!"
R: "you scare me, you know that?"
by boomandboomer December 05, 2007
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