The fine spray from a woman's Growler Vagina Cunt Pussy Twat Gash when using the toilet. As the piss exits the grower at speed and under pressure the stream can hit the flaps causing a fine mist to form and settle on the toilet seat.
Oh for fucks sake I had to use a public toilet and some filthy old hag left her growler mist all over the toilet seat!
Mum I have told you time and time again not to spray and walk away, clean up your growler mist!!
A variation of power hour wherein participants seek to finish a growler of beer in an hour.
Al: Hey Jesse, wanna have a growler hour tonight so we can try some interesting local brews?
Jesse: How long shall it last?
Al: An hour. You must finish your growler in an hour.