"Air guitar" - a form of dance and movement in which the performer pretends to play rock or heavy metal-style electric guitar, including riffs, solos, etc. Playing an air guitar usually consists of exaggerated strumming and picking motions and is often coupled with loud singing or lip-synching.
Believe it or not, there's an Air Guitar World Championship held every year at Finland. And this year, the US representative is this man known as "Nordic Thunder"
I had to apologize to my guitarist friends for sharing this. Can't help it. This is 50% ridiculous/funny and 50% pure awesome.