When you have a sweaty ass and it chafes, stings and therefore BITES you........your ass is on fire on a hot afternoon. You have SHARK ASS.
Johnny was workin all day long.......sweating..........forgot to wipe after his noon time BM and now has SHARK ASS..........it BITES.
by Yard Guy June 26, 2013
A person who is a complete weirdo or acts really strange. They can be young or old, but just out of the ordinary. Wearing weird clothes, saying strange things or being an outcast.
A guy wearing anime clothing and talking to himself is a sharkass.
by sexpot2000 January 20, 2012

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