Believe it or not, I write on stage. I can't write anywhere else; I have to be in a moment. I also have to challenge myself to make something funny out of a premise. I never have my own jokes written. I have to change things as I go along, and I have to entertain myself.
My first few films were institutional comedies, and you're on pretty safe ground when you're dealing with an institution that vast numbers of people have experienced: college, summer camp, the military, the country club.