What is Undie Grundie?
1.
The act of inserting a finger or thumb into an unsuspecting victims anus through their fresh new underwear, thus causing a permanent poo stain. If done in a forceful manner, blood stains may accompany the poo stains.
Paul surprised Steve with an undie grundie...a large fight insued.
See
Random Words:
1.
To participate in reckless behavior. To start a fight
puff mad lah catch wreck with my crew
See fight, smoke weed, get drunk, keep it ..