Someone who is a complete dumbass.
Or someone who does stupid and worthless things.
He is such a clownass that he failed his science final three times straight.
by Jesus Krist June 23, 2005
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The act of being such a nutsack to everyone to the point of murder on a stick.
Did you see that clownass Uncle Brian just pull that shit?? What a black clown!!!

Uncle Brian is a complete clownass with all this clownassery he pulls constantly! He’s such a buttfuck.
by RuckDuck98 June 30, 2019
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