Is AUTHOR wrong in the post ? POST : Some backstory: I was out all day after gift-opening and wasn’t able to get a bite to eat at all, not even breakfast because there’s no food in our house(all the groceries were bought today for the dinner). I got to dinner absolutely voracious and really wanting to eat something.

It got to the point where I had to ask my mom if I could have some chips before dinner and asked if I could eat them in private so I wouldn’t be judged. She said I could have hem but I had to spend time with the family since they were in town for a limited time.

When I got out there, everyone stared at me for a second and asked what I was doing. I explained and they all gave me a weird look before continuing conversation. I sat down and started eating, but I was super loud(fuck you crispy chips) and everyone kept giving me dirty looks. 

Once dinner started, I had my first serving with everyone else, and then went to get my second serving. Only a few people went to get a second serving, but everyone was confused that I was considering how little I usually eat(in front of people, I have a bad habit of eating in bed and munching). Once I got up for a third serving, my mom said, “Honey, don’t you think that’s enough?” And I replied saying I’m really hungry. While I was in the kitchen, I heard my grandpa(who’s a hardass) say, “If he keeps doing this, he’ll turn into a fatass like you(he’s my moms FIL).” My mom said nothing him and then he said, “What? He’s already a little chubby!! If you let him keep eating like this, he’ll soon be obese.” I ran back into the living room and said some choice words to him. He got up and got in my face, but I quickly slapped him. He stumbled back and everyone was silent for a few seconds. Then, he lunged at me, but thankfully my dad stopped him. I ran upstairs and stayed there until everyone left the next morning.

AITA for slapping my grandpa?