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(n) slang for a man's penis. First used by the fictional television character John Locke (Lost) in this dream I had.
John Locke: Man, she is something. If things go right, I might be slipping her the bad knee.
by strangerface March 23, 2010
A term used to indicate that you're old and/or handicapped and not suitable for physical fight on the streets.
You be in my hood and I take you down.
-I got bad knees, foo.
by c-dog April 03, 2005