Sister Gabrielle was lying naked in the bath at the convent.
Mother Superior knocks on the bathroom door and says "Sister Gabrielle, the blind man is here and he urgently needs to come in and talk to you about something important".
SG "He can't come in Mother Superior, I'm naked in the bath"
MS "But he says it's really important"
SG "No, I'm naked"
MS "It's really urgent. It's the blind man, surely there's no harm to be done?"
SG "Well, OK, if it is the blind man then I suppose it doesn't matter really"
MS "OK blind man, Sister Gabrielle says it's OK to go in and talk to her"
The blind man slowly pops his head around the door and says "Nice tits Sister, where do you want this blind?"