IABD

Involuntary Air Band Disorder. Spontaneous burst of air guitar riffing or air drumming. Usually occurs in people who listen to a lot of hard rock, metal, etc. It can only be controlled by exposure to such music, or lack thereof.

"Dude, I know you have IABD, but you have GOT to stop flailing your arms around"

"Dude, I cant. If you stopped playing Dragonforce on your stereo, maybe I'd stop, but we both dont want that to happen."