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3.
("Hackney-ed"):
Though more widely known as a term meaning clichéd or pedestrian, 'Hackneyed' also means to be knifed/stabbed or generally attacked - often by a gang or group of kids. Term originated from the reputation of the London borough of Hackney and its Jack the Ripper connotations.
(Verb: to hackney)
My friend's mate got proper Hackneyed the other night, 'e's not half right in the loaf..
by East-end wordary September 12, 2010
 
1.
The name 'hackney' is an anglicized derivative of French haquenée—a horse of medium size recommended for lady riders. It then went on to become an adjective to "carriage", and ultimately evolved as a double-noun, "hackney carriage". A carriage or automobile for hire. Commonly available.

Hackneyed is an adjective. Used in a derogatory way to describe something unoriginal and oft repeated.
The sermon was full of hackneyed phrases and platitudes.

~ http://en.wiktionary.org/wiki/hackneyed
by wincliff April 26, 2009
 
2.
Something that is cliche or trite
Napoleon Dynamite references are incredibly hackneyed
by Jacob January 06, 2005