grugging is where you proceed to go into a retirement home and molest every single person in the building, staff included.
"Anyone want to go grugging with me this weekend?"
To do something in a particularly brutish, thoughtless, and generally grug-y fashion.
"David locked himself out of our apartment, so instead of just calling me or something like a normal person he just grugged it and smashed the door open."
The adjective calling an inside joke so stupid, it has become hilarious for those in on the joke
What Daniel did was so grugged. I'm never going to forget that