Gaining

...who have gotten fat on purpose:

You're at a gathering. A little kid (maybe your niece or nephew or cousin or something?) comes up to you, looks at your round belly and says "Why are you fat?"

What do you say?

mmm Ive never had this happen to me and id be wary about saying something about it being because ive eaten alot because then theyll take that apply it to every fat person, like theyll look over at my mum who is fat and assume she eats alot too, which she doesnt lol

so id probably just say, because everyones different