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.
back suction is when fat girlfriends suck their skinny boyfriends through their backs while partaking in butt sex or doggy style sex.
o..
1.
A guy who cares for you with all his heart and would do absolutely anything for you. Someone who will spend time with you just so that t..
