Okay, first I'm going to go all grammar national socialist and say that when exiting quotes to make an action, you use a comma, but only replacing a period.
"I want an apple," said Jim.
I want and apple!" exclaimed Jim.
"Wait up, man!" I yell down the hall. "We should get that gun! You'll regret not doing it!"
But it was too late, Kieth was already running up the first flight of stairs. I grab a stale bagel from ER3 and grab it in my mouth as I pursue my pal.
You can tell how much of a grammar national socialist I am when I have more lines about grammar than RPing.