Little Johnny is walking along…

Little Johnny is walking along and a priest is coming the other way.
Johnny says, “Hey, mister, why’re you wearin’ your collar backwards?”
The priest says, “Because I’m a father.”
Johnny says, “Yeah? Well, my old man’s got three kids and he don’t wear his collar backwards.”
The priest says, “You don’t understand, son. I have thousands of children.”
Johnny says, “You should wear your fuckin’ trousers backwards.”