clown act 

an act of excessive stupidity or ineptitude, eliciting disgust or derision from it's viewers.

The Detroit Lions offense is an absolute, fucking, clown act.

clown act by Wizmasta January 9, 2009

Actual Clown 

Somebody who dresses normal, and thinks their acting normal, but are actually a complete and actual clown

Dude did you see that guy that got stood up by the same girl 4 times in a row? Actual Clown

Actual Clown by Wilkin Fargolve September 8, 2020