Male, 37 years old, married.
Back when I was single I used to buy mostly prepared food. I didn't have the time or desire to cook. I tended to buy the same things over and over so I'd get in and out of the store as quickly as possible.
Look for prepared dinners, Healthy Choice if the guy's older and trying to stay alive, or Hungry Man if he's young and thinks he'll live forever.
Now that I'm married, I carry a store list and buy mostly unprepared food ingriedents.
So my tip would be, look for the guy that's tossing prepared foods into his cart and doesn't linger except in front of the frozen food isle.