Reminds me of my favorite grammar joke. Visitor is walking around Harvard and says to one of natives, "Excuse me, but could you tell me where the library is at?"
Native puffs up his chest and says, "I'm sorry, but at Hahvahd, we do not end questions with a preposition."
Visitor pauses for a moment and says, "I'm sorry, could you tell me where the library is at, a*****e?"