Comedian's Bank Visit

Alright, you chucklehead, let's break this down for ya. You're the type who probably thinks a 'bank' is just a place to keep your piggy bank, right? Anyway, the joke plays on the words 'stand-up'. A comedian does 'stand-up' comedy, but 'stand-up' can also refer to a robbery. Get it? He's in a bank saying 'this is a stand-up' which is an ironic double meaning.