A case of River Knee is when you get severely burned to the point where your knee skin melts. You can have river hands and arms and legs also.
Jeff fell into the bonfire and stood up and had a bad case of river knee as his skin was dripping of his knee.
The goo that leaks out of a skinned knee.
Lauren asked Mike to kiss her boo boo. He said not with all that knee sap!
A penis that hangs around the knees
did you see john he got a real knee swinger
To have a massive cock that swings at the knees
Wow, Bob you never told me you had a knee swinger.
A huge penis that swings at the knees
Dude John really has a knee swinger
The act of a female getting on her knees a giving blowjob aka performing oral sex
My girl came by last night and gave me a little sweet knee