This is complex, because there is several sign languages (LSF [Langue des Signes Française], ASL [American Sign Languages] and a lot of others) and I really have no idea which one that is. But, a friend tell me one day that the "horn of the devil" symbol used in rock live concert what a sign language symbol for "love/love it" (I love your music) [in a way it can make sense, because when the music is loud, the better way to be understood is signs, innit ?] The guy tell me that a deaf mute himself tell him that. So my question is: Was my friend right or completely full of sh*t ? Thanks, have a nice day.