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.
1. Thouroughly, vigorously, and violently.
2. From one end of the earth to the other.
Forest Gump ran from hell to breakfast.
2.
Fa..
