Attention, grammar police:
A smart but somewhat unsophisticated West Texas boy had won a scholarship to Harvard. Like most freshmen, he was completely lost his first day on campus. He flagged down 2 upper classmen (recognizable by their sweaters) to ask directions. “Excuse me, fellers, can y’all tell me where the library is at?”
One of the upper classmen peered at him over his glasses, “Of course, my good man; but first, this is HARVARD and here at HARVARD we do not end a sentence with a preposition!”
The country boy thought for a second and said, “Okay, can you tell me where the library is at, ASSHOLE?”