One who thinks they know-it-all, but couldn't tell you their ass from their elbow.
Some smackass at poker last night was insisting that a three-of-a-kind beats a flush.

That smackass drives a Jeep, but tells everyone he owns a truck.
by wiseguy February 25, 2004
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(v) to be extremely lazy, refraining from situations that involve energy such as physical activity and or body movement.
(n) one who refuses to do anything benificial with their time
Yo what are you doing man, you tryin to go to the Y?
Na man, i got shit to do. I gotta smackass from at least 12-4. Yeeeahhh
by getoffme January 19, 2005
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A combination smartass and jackass is a smackass
Phuong is a smackass.
by Leela H. July 22, 2005
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