Be there or be square意思

"Be there or be square" is an English idiom that means you should be present at an event or activity, or you will miss out on something important or interesting. The phrase suggests that not being present is like being a square (unfashionable or uncool), while being there is the cool or desirable thing to do. It implies that you will be left out if you do not attend.

This expression is often used in a casual or colloquial context, especially among friends or in social settings, to encourage someone to join in on a planned event. It's a way of saying that the event is going to be fun and that you should not miss out on it.

For example, if you and your friends are planning a party, you might say, "Be there or be square!" to encourage everyone to attend. If you don't go, you'll be the only one not having fun, and you'll miss out on all the excitement.