You do have to accept that you sometimes have bad takes like errybody else, and this is one of them.

It's not because you made a bad joke, its because you lack the emotional intelligence necessary to ask some things:

• The likely continuous comments on her figure that caused her to wear this retort

• The fact that if you werent gonna make a comment to her shes not talking to you

These 2 things are often conflated in folks who haven't trained their empathy up, and i suspect you feel like you took damage because even tho you're not in the room your acting like she's insulted you.

I know I have to accept that some people are fat

You don't, you have to accept your humanity, which means you're the same ugly mess of hair and stink and poo as the rest of us. It means you are an unfit judge. Somebody thinks you're ugly. Someone out there thinks you're a piece of shit. I think you're just young. You need to understand your place, and you straight up fuckin' dont.

To be a bit unfair youre probably a little too full of yourself, you'll get over it if you put in work.