Very rarely, last time was over a year ago to a restaurant. For fast food, maybe once every two months or so but WITH a coupon.
I keep a 4x6 binder in my purse that contains quick & thrifty meal ideas and ingredients needed for those recipes, so I have them when I need a fast meal idea. If I need a meal idea for on the quick, I can stop at a store & get what I need. It eliminates the "I don't know what I want or need to get", saves money on eating out & is alot healthier too.