This rich Texan oil entrepreneur send his kid in the 80's to Harvard.
After a couple of months, the entrepreneur had a business trip to Boston, so he called his son to see if they could meet. He missed his son.
This was before cell phones, so the son said they should meet at the entrance to the main library at 5 pm.
The father went to Harvard. When he got there, it was so big he got lost. so he stopped,
got out of his car and asked someone that looked like it could be a professor:
"Excuse me sir, can you please tell me where the library is at?"
The professor shakes his head and responds:
"Sir, here in Harvard we use proper English; First, we don't begin a sentence with 'Can' if we want the other party to do something; it is intended only to see if one is capable of something. Also, proper English dictates that we never finish a sentence with a proposition. So would you mind rephrasing your question so I can answer your question?"
The Texan thought for about a minute and replied:
"Would you please tell me where the library is at, asshole?"