When your body resonates with a groovy lick, riff or breakdown, you can't help but move with the groove.
Be it head banging, air guitar, air drums or just tapping out a rhythm. Most true metal lovers go to groove town without noticing it at first. The body just instinctively reacts.
You tend to pull faces when you go to groove town, like showing teeth as you nod/bang your head or sucking in air with your lips with an "oooo" shape.
"Hold onto your sack, next stop Groove Town!"
"FUCKING GROOVE TOWN!
N - Hey Rob wait till you hear this part of the song!!
Rob - *Pulls face, starts headbanging* MAN!
N- I know, GROOVE TOWN! haha yes *Also head bangs*