hails and horns 

The gesture made with one's hand that represents the Devil or "Horned One" that you see being flashed at heavy metal concerts and an expression among metal heads that indicates enthusiasm for the music. Also a magazine dedicated to the heavy metal lifestyle.

"Dude, old skool Metallica is fucking awesome!!"
"Hell yeah, man! Hails and horns!!!" (makes gesture)

hails and horns by Ahawk75 August 21, 2009