Be there or be square

Meaning

A cheeky invitation to an event, implying that if you do not show up, you are boring or out of the loop. It is a lighthearted way to pressure people into attending.

Playful, peer-pressuring

Used in a sentence

• The party starts at eight, be there or be square!
• We are all going to the diner after the game, be there or be square.
• I'm hosting a game night, be there or be square!