A man goes into a drugstore and wants to purchase some condoms but he doesn't know what size to get. The pharamasist says just go out back. You'll figure it out when you get back there.
So he goes out back and sees a fence and each board has a different sized hole. Feeling a little odd, he whips it out and procede to poke it through each hole a few times ach, strting with the largest.
Fanny is walking down the ally and sees smething going onat the fence, figures it out and decides to take advantage of the situation.
When all is done, he goes backin and the druggist aks if he finally figured out which size.
I don't need any, I just came in to ask how much you want for that fence.