by TheProffBitchez January 13, 2005
Get the grundelmug. When ones penis has a mutant penis growing of to the side, this situation happens frequently in men living near power plants or mongolia.
by Jim000 October 21, 2007
Get the grundelmug. by Jim Nicoloff November 14, 2002
Get the grundelmug. the bit of skin between your nuts and your freckle and when it itches you can't reach it from the front or the back.
by jondali February 26, 2009
Get the grundelmug. by Voruhs luhzeh January 14, 2005
Get the grundelmug. the space right between your ballsack (the end of your ballsack) and the crack of your ass. it has a great amount of hair, itches alot, and usually smells like intensified ass. most men are usually turned on when they are sexually touched in that little flap of skin.
Michael Murcia has an intensifyingly smelly grundel and likes to slide a finger down that flap of skin and sniff it right after. It usually smells like horendous shit for no reason. It's quite nasty.
by WhItE MiKe Fr0m Da HiZeIgHtZ March 30, 2005
Get the grundelmug.