an old womans saggy tits that hang down and knock against her knees with every step she takes. some men find this erotic and very hot sex can stimulate a penis to pentrate through the knee knockers and enter the vagina.
by jim dandy January 24, 2005
Get the knee knockersmug. by Epic-win May 25, 2009
Get the shit-knockermug. 
by Dorma February 22, 2011
Get the Door Knockersmug. Most famously featured on the show, iCarly, a hob knocker is a word mainly used by English people. In real definition, a hob knocker is a man, during oral sex, hitting a woman in the face with his dick
On iCarly, it is described as illegal. In actuality, it isn't. It's just really fun
On iCarly, it is described as illegal. In actuality, it isn't. It's just really fun
by Gogogoman June 20, 2011
Get the hob knockermug. by Trundle November 1, 2006
Get the cocker knockermug. Leo was such a home knocker that his bed made a hole in his bedroom wall. Boy oh boy were his parents angry.
by TheAssociationss July 1, 2011
Get the home knockermug.