The Condoms' Size

A kid goes to a pharmacy and asks:

- Do you have condoms?

- First, says the pharmacist annoyed, condoms are not for children, and second, tell your father to come here and buy them himself, because condoms have different sizes.

- First, replies the kid, condoms are not for children, they are against children, and second, I won't tell my father anything, because the condoms are for my mother, who's leaving in a business trip and doesn't know the size... yet.