separate sandboxes

A term to be used when two people are fighting, oftentimes like children, and there arises a need for them to calm down and shut up. The term comes from the notion of "time out," such as putting two bickering kids on the playground in two different sandboxes to avoid them fighting any longer.

College Student A: "You can't tell me what to do!"
College Student B: "You're being an asshole!"
Sensible Party: "Separate sandboxes, you two!"