A gesture made famous by Frank Mullen, (vocalist of Suffocation) The blast hand is performed by bringing one of your hands to the side of your head and rapidly shaking it from side to side. This will earn you points when seeing extreme metal bands live, especially when the drummer is performing a blast beat. Although this is clearly not how a blast beat is performed, (flying fingers) real death metal fans should recognize it, this way you can all rep the blast hand.