Personally, I would not give $1 for a fat girl. Or, for that matter, fuck her even if she paid me. Not even close my eyes and let her give me a BJ.
I can abide an ugly girl as all girls have at least one good angle (if nothing else, you can do them from behind). But there is no way you can ignore the fat. And you can even smell the fat. Even with a heavy dose of V, a fat girl will kill an otherwise raging boner. I know because I attempted it before (against my better judgement). Early in my SA experience, I was tricked into meeting a [Latina] girl who was much fatter than her photos. The room was already paid for so I gave it a try despite my better judgement. That experience confirmed there is just no point to such an encounter (at least for me).
I pity those guys who are stuck with fat SOs in their lives. It's one thing if the girl was thin when you committed her and got fat later. But, increasingly among young dudes, they are just going for the fat girls from the start. Maybe that's all they can get, but these dudes are not what I would consider ugly losers. Just one of the many things about the current state-of-the-world that repulses me.
If certain men would stop tolerating the fat, women would take notice again and make an effort to stay thinner.