i found this webpage c/o collegehumor.com
http://www-b.oedilf.com/db/Lim.php pretty amusing.
its a dictionary where all the definitions of limericks.
interestingly, they have the word carboxypeptidase (i wonder how many of you know what that is)
but not the word cat.
now that i said it... heres the definition of carboxypeptidases for the non-biologists:
In your mouth goes a protein intact,
Linked by peptide bonds, matter of fact!
N-type -ases undo
(From the N-side) the glue,
Yielding bits for your gut to extract.