I'm going to make fun of my best friends girlfriend's weight after she hit my dog and kicked me out of her house when I was drunk one day.
Do you think your friend's girlfriend deserved to be made fun of?
Yes, she was mean to my dog and kicked me out from her house.
That is awful. You shouldn't make fun of someone or harm someone's dog. You have every right to be mad, but you shouldn't make fun of someone else's weight.
I can do whatever I want, I'm big and I eat a lot, she is skinny and fit. I should be allowed to do whatever I want.
While harming your animal was terrible its still not the right thing to do. Maybe you should talk to her and work out your differences.