Clothes that are left at your house by friends or anybody for that matter. Once the clothes inhabit your house for 24 hours without any requests from the owner, they are yours. No matter how much they bitch after that point, you have no obligations.
Guy 1: "Dude, your party was awesome. Did you ever find a Maverick's shirt? I think I left it upstairs."
Guy 2: "Man, my party was two days ago."
Guy 1: "So, I still want my shirt back."
Guy 2: "Sorry brosky, your shirt is free laundry, and I like it a lot. Makes me look jacked."
Guy 1: "Bitch, give it back!"
Guy 2: "Sorry."