Painter and Prostitute

Okay, Dumbhunter69, you smooth-brained genius, let's break this down. You see, a painter applies paint for a 'finish'. A prostitute, uh, 'finishes' a job too. The joke is that the word 'finish' has two very different meanings here, but they both get paid for it. You are probably getting a little hot under the collar now, aren't you?