Wiktionary
n. (context idiomatic English) A student who frequently makes jokes or poke fun; a wiseacre.
Wikipedia
Class Clown is the fourth album released by American comedian George Carlin. It was recorded on May 27, 1972 at the Santa Monica Civic Auditorium in Santa Monica, California, and released in September.
Usage examples of "class clown".
What interest that overgrown class clown had in these proceedings defied Toya's power of imagination.
Reza was the class clown and cut-up king, sometimes far-out enough to make Celine wonder how he had passed the psychological tests.
I guess there was a reason I was voted Class Clown in the '66 Gates Falls yearbook.
I had tagged him as class clown the day before, but today, drenched in the milk of human kindness and teacher-blindness, I tried to avoid classifying him, labeling him in any negative way.
And, of course, you're trying to figure out who had carnal knowledge of your mate, if for no other reason than to see if he or she at least had good taste and wasn't fucking the class clown or the office idiot.
He was such a goofball, the de rigeur class clown, with such poor grades the school had made him take the test three times.
Here he was, calling up probably some of the same guys he's chatted with who knows how many times, and the class clown decided to tease them a little.
By the end of first period I knew that Bo Michaels, a big, good-looking dimwit, was going to be a thorn in my side as he burned up excess energy by being class clown.