I got a call today, they want me to come in for a second interview for the humane society. That's cool, I'm nervous

My mom of course spouts out right when I mention it when I get off the phone "do you think you can do the job, you're kind of fat, that's why you don't apply at the zoo isn't it?"
THANKS FOR THE CONFIDENCE YOU BITCH!
I don't apply at the local zoo because I don't want to work for them not because I can't do the job. I tackle fucking eagles, you kindly shut your drunken bitch mouth thanks.