What is Groshing?
beautiful, fabulous, handsome, ect.
Gary: Hey Dan.
Gary: Your mum is look very groshing today ;)
Dan: Eff you Gary. Eff you.
grinding and moshing at the same time.
Because moshing is so '06
and grinding is very '07.
But it just wouldn't be a show without moshing so you combine it with grinding. Therefore creating groshing.