This one, I didn't really follow the rhyming thingy but who cares. :P
There was a guy named Lash
Shhh, I think he'* been smoking hash
He'* really rolling with these poems
No, not rolling a pot but a poetry fit for the Pope
Hey Pope, give Lash a blessing
Did Pope sneeze asked Lash, bless you Pope.
Hey could a Pope bless himself?