A bus load of Nuns drive over a cliff and are all killed in the crash.  Naturally being nuns they all turn up at the gates to heaven where St. Peter asks them to form an orderly queue.

Raising his voice slightly St. Peter says "Ladies, as nuns you have only one requirement for entry into paradise; you must never have had knowledge of a mans genitals."

The first nun steps up and St. Peter says "Have you had knowledge of a mans genitals Sister Mercy?"

Sister Mercy replies "We are a nursing order, I once saw a mans penis while he was washing."

"No problem," Says St. Peter.  "Wash your eyes in the Holy Water and you may enter."

The next nun steps up and St. Peter asks the same question to which the nun replies "We are a nursing order, I once touched a mans penis while we were washing him."

"No problem," Says St. Peter.  "Wash your eyes and hands in the Holy Water and you may enter."

Suddenly there is a fight in the line and a big burly nun pushes her way to the front.  "What is the matter Sister Ophelia?  Calm yourself my dear."

"Well, "  Says Sister Ophelia, "It's simple your holiness.  I want to wash my mouth out before Sister Immaculata washes her arse."

Sorry