Oldest trick in the pervy fungal fetishist's book. Didn't this girl go to her school's orientation? First thing we were told when we went to college, if someone offers you cash for your sweaty socks, you get half up front before you hand them over. Now this guy got a free moment of olfactory ecstasy, and that girl's left with nothing but the weird feeling of being rejected for not having grosser feet. Now she'll be overcompensating by not wearing flip flops to the shower and that, ladies and gentlemen, is why athlete's foot epidemics are such a problem on our nation's college campuses.
Sources: Redditor itsthegabs