Three couples—one elderly, one middle-aged, one young and newly wed—apply for membership in a church. The pastor informs them that the requirement for new parishioners is that they abstain from sex for two weeks. The couples agree and go their separate ways.

After two weeks, they return. The pastor asks the elderly pair if they were able to abstain for two weeks. "No problem at all, Pastor," replies the old man.

"Congratulations!" says the pastor. "Welcome to the church." He turns to the middle-aged couple and asks if they were able to abstain for two weeks. "It was difficult," replies the husband. "By the end of the second week, I had to sleep on the couch, but we did it."

"Congratulations on overcoming temptation," says the pastor. "Welcome to the church." He then turns to the newlyweds and asks if they were able to abstain for two weeks.

"At first it was no problem," says the husband. "But one day my wife was reaching for a can of corn on the top shelf, and she dropped it. When she bent over to pick it up, I was overcome with lust and took advantage of her right there."

"You understand, of course, that this means you will not be welcome in our church," says the pastor.

"We know," says the young man. "We’re not welcome at the supermarket anymore either."