Paddy and Murphy.

Paddy and Murphy are in a
mental asylum. The nurse checks
in on Paddy to find him sat on
the end of his bed and
pretending that he was driving a
car. 'What are you doing Paddy?'
the nurse asked.
'Im driving over to Dublin' Paddy
replies. So the nurse goes to
check in on Murphy to find him
wanking one out.
'Murphy you dirty sod! What are
you doing?!' Asks the nurse.
'Im shagging Paddy's wife while
he's in Dublin'