How drunk they are, how wet they'll be, if they don't find, the bathroom key. They found the key, but where's the door, oops it's too late, it's on the floor.  Call PETA and file suit on behalf of the rat brigade.  Although never actually uttered the phrase “You dirty rat!” in the 1932 movie Taxi or in any other, James Cagney is credited with having it as one of the most movie quotes. So here's a quote from Paul the Elder and Paul the Younger: "We're sick of the dirty rats stinking up the place."