Of course they think they're tight, most of their sexual partners are desperate and end up just shoving it in their belly button or between a fold. The fatty either a.) doesn't mind because its human interaction (which we already know they are in desperate need of) or b.) doesn't notice because it has been obese for so long it doesn't even know what vaginal penetration feels like. Either way, it's pretty gross and I feel no sympathy for anybody that fucks a fatty/engages in bestiality. If the smell doesn't scare you off, well, you must be a pretty pathetic human being.