Person 2: Damn! What the hell is that on your fingers.
Person 1: I haven't showered in days, and that's some of my wicked bad grundle build up from my fat ball sack.
2. (Obscure) Unkempt, often awkward character who just doesn't seem to fit with the rest of the group. Unrelated to 1; originated in Cape Breton, Canada, but has spread as far as Australia.
2. I feel like the family grundle.