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Meaning of kneesies

knee•sies

Pronunciation: (nē'zēz), [key]
— play kneesies,
  1. to rub knees with another person, esp. surreptitiously and in an amorous or sexually provocative manner, as while seated at a table.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.