My old math teacher used to dress pretty casually.

So one day, when I walked into class they were all dressed up, suit, tie, etc.

I strolled up to them and asked, "What's the equation?"

You might also enjoy

Many of the jokes are contributions from our users. If you find anything offensive and against our policy please report it here with a link to the page. We will do everything to make this an enjoyable platform for everyone.