Irish Nun Joke

A car full of Irish nuns is sitting at a traffic light in downtown Dublin, when a bunch of drunks pull up alongside of them.

"Hey, show us yer tits, ya bloody penguins!" 

Shocked, Mother Superior turns to Sister Mary Immaculata and says, "I don't think they know who we are Sister. Show them your cross."

Sister Mary Immaculata rolls down her window and shouts, "Piss off, ya fuckin' wankers, before I come over there and rip yer balls off!

Rolling up her window, Sister Mary Immaculata looks over at her Superior and asks, "Was that cross enough, Mother?