I'm trying to make someone understand that I don't want to tolerate name calling regarding people's size, especially my own damn friend. I don't believe in berating or harassing people for their choices. I meet people with kindness and understanding, possibly even too much.
Honestly, it's okay that we disagree about this issue. I just don't want to hear or be exposed to the behavior. It's ultimately negative, and not helpful. Calling someone shamu, java the hutt, or whatever else isn't going to make that person feel better, loose weight, or do something about it. At least, not coming from a friend it is not. Maybe someone you hate, sure. But I don't hate my friend, and I don't want to stand around and listen to it. I think that's reasonable to ask.