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1.
being a complete asshole to someone, especially after having given something to or having done something for them.
I predict "Leno'd" will become the new slang term for taking something back or selfishly screwing over a colleague
by thedarkstar January 15, 2010
 
2.
To steal material off of another comedic source, used to compare the shameless stealing of Jay Leno's comedic material off of other scources, eg. Saturday Night Live, Conan O'Brein, etc
I was going to to a rap at the school talent show but Steve totally Leno'd it off of me.
by B-rad1989 May 22, 2005
 
3.
To give someone something, only to complain and take it back later.
My ex-girlfriend leno'd me to get her ring back.
by vandilization November 08, 2010