Two Nuns and a Vampire

Two nuns, Sister Mary Agnes and Sister Mary Vincent, are travelling through Europe in their car, sightseeing in Transylvania. As they are stopped at a traffic light, out of nowhere, a vampire jumps onto the hood of the car and hisses at them through the windshield.

"Quick, quick!" shouts Sister Mary Agnes, "What should we do?"

"Show him your cross," says Sister Mary Vincent.

"OK," says Sister Mary Agnes. She then opens the window and shouts, "Get the hell off our car!!"