IT'S JOHNNY

Little Johnny goes to the drugstore for some condoms. 

He goes up to the counter and asks, "Sir, can you tell me where the 
ribbed condoms are?" 

The pharmacist replied, "Son, do you know what condoms are used 
for?" 

"Sure do," replied Johnny. "They keep you from getting VD." 

"OK," said the pharmacist. "Do you know what the ribs are for?" 

Johnny thought for a minute, then looked up at the pharmacist and 
replied, "Well, not exactly. But they sure do make the hair on my 
goat's back stand up."