Limericks ain't been done to death until there is no humour left in the world. How about the best one or two you've heard (with the really bad words censored so that we all will know what they are)? NO FRIGGIN' EDWARD LEER, unless it's really dirty.
Here's for starters.
There once was a girl named Alice, Who used a dynamite stick as a phallus; They found her vagina In South Carolina, And parts of her anus in Dallas.