When a lady gets so old that her breasts sag all the way down to her knees, they then stop being breasts as such and become "knee bangers". Another tell tale sign is when you shout, "Show us your tits!", they must lift their skirt in order to do so.
(Can also be spelt as one word - "kneebangers")
"Those knee bangers make her look like she has four arms!"
"Yeah you're happy know because they're big and firm, just wait until your older... when she turns sharply, you'll get some knee bangers to the face..."
"Those knee bangers make her look like she has four arms!"
"Yeah you're happy know because they're big and firm, just wait until your older... when she turns sharply, you'll get some knee bangers to the face..."
by Gr8 January 15, 2008
by Cornelius of Gump October 23, 2012
by Susan Beamer September 20, 2007
A triumphant knee banger is when you push a girl's head towards your nether regions in hopes of getting a blowie, but you accidentally slam her head against your knee. She then vomits and grosses you out, the toxic waste falls on your crotch, staining your pants with vomit. After a while you realise that it doesn't feel so bad and cum. Hence the name.
by thighmaster69 October 28, 2018