What do you call 5 lawyers at the bottom of the ocean?

A good start.

Or you could try:
http://www.lawyer-jokes.us/
http://www.ahajokes.com/lawyer_jokes.html
http://www.lawlaughs.com/
[which is where I got this one...
Q: What's wrong with Lawyer jokes?

A: Lawyers don't think they're funny, and nobody else thinks they're jokes.]
Carol