Simply put, the ugs do. The hot ones don't (except for very rare occasions). This is because of the many options hot girls have, they can go and get a drink off about 80% of guys at a bar where as the ugs could prolly get about 20% of the guys, possibly higher if the guys are drunk, if they actually tried but usually they're too shy and then don't get approached by guys anyway effectively making the chance of them getting a date goes to near 0%.
This is why we recomend to go sleep with ten other women to cure oneitis. And to keep more than one girl in your fingers in order to prevent it.
Question answered - Thread closed to prevent clutter.