Is AUTHOR wrong in the post ? POST : Well, I just want to clarify, I'm not a grown adult yet, but I believe i'm old enough to make my own decisions and make reasonable judgements

I was at a coffee shop talking with a couple of friends. we were playing Mario Party and having a good time. until my dad shows up. usually this happens when he needs me for something or just to check where I was.

Today he had something different in mind.

My dad usually asks what we're doing, i chat with him for a bit, then I went back to my friends to continue playing

My father comes down and sits with us, then pops a weird question directed at my friend

"ya think \[me\] is gonna lose weight?"

of course, my friend shrugs, he doesn't care. and just mumbles a yeah and we keep playing.

"nah i think he'll give up" my father replies. 

Every fucking time I'm at the dinner table, my father sneaks in a "you're not gonna lose weight" scenario, and it pisses me the fuck off. 

I told my dad to quit it. 

"excuse me?"

"quit it. everytime you show up and see me doing nothing you like to throw something out there to piss me off. and you seem to fucking enjoy it."

my father looks at me, and tells me to pack up my shit, and we're gonna have a long talk home. 

to sum up the lecture. he told me not to disrespect him infront of my friends. because those friends won't help you in life. (not like he;s helping me either)

I got grounded for disrespecting my dad. 

Am i really the asshole in this case? did i overreact when my father brought it up? or was my anger justified?  