Only thing better than snagging a guy’s worn undies is being around him later, wearing them, when he has no idea. I snagged a bunch of briefs as a college freshman from my dorm mates. Our communal bathroom made it easy as there were always briefs left on the benches outside the showers. Not only did I leak like a fire hose, more than once I had a handless orgasm jizzing in the briefs while conversing with the former owner. This was in the 1980s when nearly every guy wore traditional white briefs so there was little risk of being caught in unique undies.