Becks

A Becks is a person who becomes obsessed over a 4chan online community. This person eventually gets into trouble because of their behavior and is forced to leave. In return, the person keeps making alternate accounts to rejoin said online community to cause problems.

This causes any new joining member to be called a Becks till proven otherwise.

The slang has been circulating since 2020

"Did you see that new account, what was up with that?" "Oh do not worry about it was just another Becks"