Out-of-business Brothel Sign

Listen up, buttercup. This joke is funny because it uses a double meaning! "Beat it" can mean "go away," but it also can mean, ya know, *beat it*, like what people do at a brothel. Since the brothel is closed, they're telling customers to go away, but the phrase also implies the brothel is out of business 'cause nobody's gettin' any action. You probably still don't understand it because you wear Crocs.