I Love When People Notice My Fat

I'm 17 and I'm quite overweight. Ever since middle school I've been piling on pounds and getting heavier year after year. Currently, I weigh 250. My dad has noticed since the start and makes frequent comments. He'll pinch my belly and say something about how big I'm getting. The other day I was in the kitchen grabbing a few snacks and he patted me on the butt and asked if I really needed any of them. He likes to call me slim as a joke. He's very fit by the way.