A version of noob-sauce and also cow-sauce , but a much more severe version.
It is also the name of a known disease.
Symptoms are as listed: inability to think properly, loss of brain cells continually from birth, loss of proper limb movement, loss of rational thought, and more sever e effects of this disease is slurred language and severe mental retardation.
That spedover there is a complete hwan-sauce, I mean, look at him, he just ran into a wall!
Usually referring to marijuana residue; when removed from a marijuana smoking apparatus and collected in large amounts, usually to be smoked or put on toast.
Person 1: "Bummer dude, it's 4:20 and we're all out of weed!"
Person 2: "It's alright dude, we'll just hit the grinch sauce."