I call this one my Blue Steel...
– Dean to police photographer, 2.19 Folsom Prison Blues
Blue Steel was the name of a signature modeling pose belonging to the really really ridiculously handsome Derek Zoolander in the movie Zoolander.
Dean strikes a pose in 2.19 Folsom Prison Blues with his own version, and it makes its appearance on every Supernatural gag reel and at various convention appearances by both Jared and Jensen.
In 6.15 The French Mistake Dean finds a picture of Jared and Jensen on a magazine cover and says "Look at these male modelling sons of bitches - nice Blue Steel Sam!