Joke that requires a degree in English

One day while walking down the street with his mother, a little boy sees this bow-legged guy. The kid tells his mom, "Whoa, mom! Look how bow-legged that S.O.B. is!" His mother tells him, "We don't use that sort of language! As a punishment, you have to read Shakespeare for an hour."

The next day the boy sees another bow-legged guy and exclaims, "Damn, that guy's even more bow-legged than the last one!" Again as a punishment, the boy's mother tells him he has to read Shakespeare, but this time for a whole week.

A few days later, the boy sees another man with bow-legs. He yells, "Holy crap! That guy's the most bow-legged guy I've ever seen!" His punishment is to read Shakespeare for a entire month this time.

So, about a month later, the boys sees yet another bow-legged guy, turns to his mom and says, "Mother, pray tell, what manner of men are these that wear their balls in parentheses?"