Two nuns driving along in their car on a nice hot day. They come to traffic lights and are sitting with the windows down when a car load of rowdy youths pull up alongside.

"Wahay penguins, get your boobs out," shouts one.

"Give us a kiss penguin," shouts another.

Mother Superior is horrified and says to her passenger "Sister Bernadette, i think these yobs don't know who we are? Show them your cross"

"Yes Mother Superior," says Sister Bernadette who leans out the window and shouts. "Fuck off you little bastards or i will smash your ugly faces in!"