The act of blowing kush smoke into a crowd of women on a smoking patio of a bar and watching for the one who pops her head up to see where the smoke came from. When one does you say under your breath, "gotcha bitch." Then offer her a toke. Your odds of trashbagging her that night are much higher than any other woman there. Trust me.
Friend 1: what did you dolast night?"
Friend 2: I was in hollywood, groundhoggin all night. I trashbagged this mexican chic from downey.
Groundhoggin It: when one has to take a shit and it is trying to sneak out and you force it back up there and it does the same thing again and again until you eventually let nature take its course in the bathroom.
When you have to take a dump so bad you can feel the turd start to peep out of your ass. Derived from the ground hog peeping out of the ground to see his shadow.
Dat Groundhogian mother fucker never took out that motha' fuckin' trash; then he told me he didn't take out the trash because none of it was his trash! What a Groundhogian twinky upper decker, infructus!