Exactly. Not only is she the kind of bitch that fishes for compliments, she’s clearly an insensitive twat to ask a fake question like that in front of *her *supposed friend who clearly is fat. Do not want.
“No, it’s just your butt. The rest of your body is so thin it looks like a popsicle stick on top of a caramel apple.”
Meet the Mets, Meet the Mets, step right up and greet the Mets.
What Monstro said with an added deep sigh.
I woud suddenly remember that I had an urgent appointment elsewhere. Anywhere else.
If it’s men, the correct answer begins with, “Dude, you’re so fat…”
^ This, starting with friend one and repeating with each subsequent question.
I’d say, “Fatty Magoo you know I love you.”
Ok, but how should one answer such a sarcastic question?
“Yes? No? Maybe?”
This is where the entire night has gone wrong. We have 4 rail thin people, one morbidly obese person, and body weight just ‘happens to’ come up in the conversation?
Bullshit. It came up for a reason, and if the toothpicks are all asking if they’re fat, one by one, it’s a fucking setup. I don’t know who they’re setting up, me or our obese friend, but it stinks to high heaven.
“Fat? Dude, with you, “fat” doesn’t even begin to cover it! You’re positively rotund, emphasis on the “tonne”. Fat stands next to you so it looks skinny. NASA wants you use you for a slingshot maneuver. Aliens in other solar systems can detect you by how much the Sun wobbles!”
That may have escalated quickly.
Really, the only appropriate answer to any of this is “What kind of a question is that?”
I invoke my right under the Fifth Amendment not to answer, on the grounds I may incriminate myself.
“Compared to what?”
Well, yeah.
See how fat friend responds.
Fat is a pejorative term to me, someone could be heavyset but not “fat.” I think most people don’t see that distinction - but this is probably getting off topic.
McNamera once said that during a press conference one should not answer the question asked. One should answer the question that you wish they had asked.
In this case, one could take the first question as an invitation to talk of your own struggles with weight gain. Or something you read about weight gain. Or fashion tips on how to look slimmer. If they insist (and in the OP’s scenario, I think they would) escalate one level. Not more. “Hm: tough to say… what’s your BMI?” Then escalate another level if necessary, finally ending in pleading the fifth or some wise-ass remark.
When an old girlfriend asked me this question I looked at her and started cracking up. That probably wasn’t best practice.
LOL. That is too funny. 
Do some people really think this is the way women talk to each other? They don’t.
Tell about the time you saw a joke sign for sale in a beach tourist store:
It’s really in a touristy beach trinket shop near me. And ya know what? For most folks’ butt it actually works.