More on Grammar

I know what it sounds like, but it was fun to type anyway, even more fun to say...

Prepositions.
"Hey, I'm going to the store, wanna go with?"
(My sisters are gritting their teeth right now.)
"They had a position to fill so they took him on."
"What are you doing that for?"
"Where you at?"

Kristi Rule #4
Never use a preposition to end a sentence with.
Self-explanatory.