Definitions by Savvy G

Rainbow hopper 

A Term used to describe those who don't get in-jokes at school. Often used to refer to a specific instance of this case. Can be used against the person and posted on their locker as a punishment for not being in on the joke

Gah, John is such a Rainbow Hopper, he never gets any of our jokes.

Rainbow hopper by Savvy G February 21, 2015