While giving a girl back door service (doggy style) reach over top her head and forcefully hook her nostrils with two fingers pulling back on her head. She will surely resemble Miss Piggy.
by AD218 August 27, 2008

One who is in to eating some serious ass! A tunnel rat is not a casual ass eater or one who may by accident come in contact with the anus while eating pussy. Tunnel Rat is reserved for those who have made an art form of eating ass!
After years of practice and honing my ass eating technique, I have finally earned the monacher of Tunnel Rat!!
by AD218 August 28, 2008
