Low Hanging Nuts.
I am not sure what some dudes do with their balls but they some how manage to get their balls to hang all the way down to their knees.
I really like guys with natural low hanging balls. Or sometimes if a guy is really hot from working out his balls will hang extra low. I used to like sucking off guys at my local gym because in the heat of the shower and hot tub they alway had low hanging cum filled nuts. And blasted extra creamy and thick loads of spunk down my hungry throat and asshole.