Once there was a Texan who was visiting Harvard and was lost. He
stopped the first person he came to in the hall and said, "Can ya'll
tell me where the libary is at?"
To which the affronted Harvard grad replied, "Sir, this is Harvard.
At Harvard we never end our sentences with prepositions. Kindly
rephrase your question."
"OK, can ya'll tell me where the libary is at, asshole?"