Offical Return of Dean Winchester's gym shorts.

So back in Supernatural season four (2009), Dean Winchester went undercover in a high school as a gym coach, and hiliarity ensued with his 80's era outfit, complete with head band.

Go forward a few years to the Supernatural Conventions, when Richard Speight Jr. borrowed this costume from wardrobe. Here they are retiring the 'shorts' in an improptu (to Jensen Ackles at least) ceremony.

Onstage Misha Collins (Castiel) Felica Day (Charlie) Richard Speight Jr. (Gabriel) Jensen Ackles (Dean) and Jared Padalecki (Sam) with phone.