Class Clown

A class clown is someone that has a huge amount of confidence (but some might just be conceited).They are the ones that make students laugh to get attention. It is class clowns that are well known and sometimes even part of the popular kids. They tend to have a bit of a vendetta against teachers or those of higher authority.
As soon as a teacher leaves the class clowns are the ones who will go berserk

Your father doesn’t always look like it but he was quite a class clown in his days. Source: theidioms.com

class clown

A person who will laugh about ANYTHING and when I mean ANYTHING I mean ANYTHING. Tbh, they act just like me. It's a funny/painful experience to keep up with lol.

"Jimmy, stop clown around!", Mrs.

Narcy said. "But I'm the class clown" "I don't care", she said