Circle joke

A joke that is told while smoking weed in a circle, and thus must be kept between the circle. "What's said in the circle stays in the circle."

James: you can't expect to be on the "top 5 fighters at work" list when you have a curfew.....

Betty: Oh man that's funny ! I'm going to have to tell people at work!
James: Nahhhh nah nah that's a circle joke.