"Naked in the hall" joke

Two priests are off to the showers late one night. They undress and step in the showers before they realize there is no soap.
Father John says he has soap in his room and goes to get it, not bothering to dress.
He grabs two bars of soap in his hands and heads back to the showers.
He is halfway down the hall when he sees three nuns heading his way.
Having no place to hide, he stands against the wall and freezes like he's a statue.
The nuns stop and comment on how life-like he looks.
The first nun suddenly reaches out and pulls his dick.
Startled, he drops a bar of soap. 'Oh look,' says the second nun, 'a soap dispenser.'
To test her theory she also pulls his dick... and sure enough he drops the last bar of soap.
The third nun then pulls, first once, then twice and three times.
Still nothing happens. So she tries once more and to her delight she yells, 'Look, hand cream!'