A convent of nuns (not sure what the collective noun is) decide it's time to renovate the chapel. There's a lot of work involved and it's a stuffy little place. As time goes by, the nuns are getting very hot with all the hard work. Sister Mary suggests that they strip naked to finish the job. They do so, just as there's a knock at the door. Sister Mary walks over to the door and shouts through "Who's there?". The reply comes: "It's the blind man". Relieved, Sister Mary opens the door. The man then says "Hey, nice tits sister, now where do you want these blinds?"