A girl will have red knees if she has been giving blowjobs to a lot of guys, or to one guy repeatedly.
"Damn, have you seen Esther. She got them red knees."
"Yeah, her and Johann have been going nonstop."
"Yeah, her and Johann have been going nonstop."
by RedKneesEsther January 22, 2015
This action is usally performed after a long period of rain. This is when a person on a knee bord is dragged by a 4 x4 vehicle... most likely a 4 wheeler.
by Big Sep June 17, 2005