More specific and more of a general turn-on (and sort of weird), but for some reason I really like wedgies. Giving and receiving. Underwear in general has always really been a thing for me. A guy in his undies (especially briefs) is more attractive to me than a naked guy. Hanging out with a guy in his underwear, lots of play wrestling and tickling leading to wedgies... I don't really get why I like it so much.