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.
breakfast for the l33t supa h4x0rs
it has a shiatload of teh sugar in it
bob: I'm famished, gimme something to eat or I'll d..
1.
A Clan ZX N00B
WEBMASTER OF SOME STUFF
That guy acts like ZX_NewbieHere..