Top Definition
The vicious combination of body and fecal odor.
"Dude, I can't believe you got paired up to work with that hottie!"

"Believe me, man, I was thinking the same thing. It's not as good as you think. She's got some serious assbio going on. No joke."

"Oh man! You sure it's not just B.O.?"

"Trust me man, there's definitely some ass in there. 100% assbio. It's a crying shame."
by BSmooth357 June 04, 2009
9 Words related to assbio

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