(For the benefit of non-UK readers a quid is slang for a pound sterling.
U.S. readers replace it with "10 bucks")

     The local priest was strolling down the High Street late in the evening
when suddenly a young lady of the night pops out of a shop doorway.
     "Hello Father", she says, "Fancy a quicky for 10 quid?".
     "My dear child", says the priest, "I've no idea what you mean. Please
leave me alone."
     A little further on up the street and another woman appears out the
darkness.
     "Hello Father", she says, "Fancy a quicky for 10 quid?".
     "My dear child", says the priest again, "I've no idea what you mean.
Please leave me alone."
     He carries on up the street and is amazed when it happens again!
     "Hello Father. Fancy a quicky for 10 quid?".
     After this he decides that he will go and see the Mother Superior in
the Convent and ask her if she can explain the women's strange request.
     "Mother Superior", he asks, "Tell me, what's a quicky?".
     "10 quid", she replies, "The same as in town!".