Over 100 authentic props from the set of Dirty Grandpa are being auctioned off, and while the lot includes items worn and used by the likes of Aubrey Plaza, Jason Mantzoukas, and Robert De Niro, the hottest item is obviously the used jock strap Zac Efron wore during several of his nearly-nude scenes.

The auction, which began Monday and lasts through Friday, June 10, also includes the horse mask worn by Mantzoukas, a pair of Plaza's overalls, De Niro's whole collection of Hawaiian shirts, and basically everything Zac Efron wore, including the jock strap.

According to the jock's listing, it includes "assorted stains from use during production but remains in good condition."

At time of posting, only three people had bid on the item at an asking price of $60.

So affordable! Get on it!