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1.
(noun) I mildly humorous term for referring to someones teeth.

"Dear god, that guy just got kicked in the piano keys"!
by Archyis August 29, 2007
 
2.
Piano keying is when an interracial group of gay men line up their penises as per the white/black keys on a piano. one then attempts to play the Stevie Wonder&Paul McCartney hit, "Ebony and Ivory" by sucking off the 'keys' in order.

(If there are only white players some can substitute as black keys by spreading nutella on their penis)

When spoken the term should be accompanied by an interlocked fingers gesture.
OK guys, let's piano key with the hardware team.
by cowboyecosse July 28, 2014