I used to carry a database of hundreds of these jokes in my old Psion, so that if someone started telling them, I could outgun him. So Colin's collection today has only one I haven't seen before - with the punchline "Chelsea Clinton." Wander over and take a look; there are some classics.
We lawyers know that these jokes are a sign of your affectionate regard for our profession and that you all know how essential we are to a free society. Or maybe you're just jealous. Either way, we're relaxed.