A girl invites her boyfriend over for dinner with her parents. Since
this is such a big event, the girl tells him that after dinner she wants
to have sex with him for the first time.

The boy is ecstatic, but nervous because he's a virgin. He goes to the
pharmacy to get some condoms. He tells the pharmacist his situation and
asks for advice. The pharmacist tells him everything there is to know
about sex. At the register, the pharmacist asks how many condoms he'd
like to buy: a 3-pack or a 10-pack. The boy says he feels lucky and
insists on the 10-pack.

That night, the boy shows up for dinner a little late. His girlfriend
meets him at the door leads him straight to the dinner table where her
parents are already seated. The boy sits down, quickly offers to say
grace and bows his head. A minute passes, and the boy is still silent
with his head down. Five minutes pass, and still no movement from the
boy. Finally, after 10 minutes, the girlfriend leans over and whispers
to the boy, "I had no idea you were this religious."

The boy turns and whispers back, "I had no idea your father was a