Late teens, early 20's, between like 19-20. If I had to guess, I was good for 4500-5000 kcals a day for three or four months during that summer. Most of the time it was shit food - 3-4 McDonalds cheese burgers a sitting, an order of fries, a 2 liter of real Pepsi, a slice of pizza($1.35) here and there, plus other things. You could live like a real high falutin' fatass for $10-15 a day.
Gained 25-30lbs, gave back probably half. Got relatively strong though. Thing that saved me was that it was before social media, and internet culture. We'd be out 10am - 1 or 2 in the morning, chasing girls, working, and tons of walking.