When you are eating pussy and you have been at it so long that your jaw and your mouth begin to cramp up.
by GoatPeople September 19, 2009
Get the Lock Jawmug. refering to and/or caused by a person giving another person hed; they are usually in the position so long that there jaw just kinda gets stuck hanging open and will not shut for a series of hours
by Ben fuckermother August 26, 2003
Get the lock jawmug. by L. April 20, 2005
Get the lock jawmug. by vanvan4026 December 20, 2010
Get the locked jawmug. Lock jaw or tetanus(correct spelling lockjaw) is where your jaw locks in an open position due to your chewing muscles spasming. You can get it by a wound that gets infected with it.
by Red Dog August 25, 2005
Get the lock jawmug. by Daisy Promise July 29, 2011
Get the Lock-jawedmug. by Kyosanshugi January 10, 2004
Get the lock jawmug.