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Where two people pose for a picture to imitate the Lewis and Clark Historic Trail signs where one person is pointing while the other looks on. Usually done at a point along their historic trail.
by historyisawesome January 19, 2014
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A game played by two people that involves the 'exploration' of each others bodies. Game is usually played by using hands, and on occasion, tongues but once you cross into the danger zone, its no longer lewis and clarking, then its officially a hook-up.
Girl one: Omgshhhh last night was amazing!!!
Friend: So did you guys hook up??
Girl one: No, but there was definitely some lewis and clarking going on ;D
by summerisamazing =] April 02, 2009
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When that one friend always talks about leaving the east coast for the west coast, with out a game plan or sufficient funds
My friend just graduated college, he is lewis and clarking it.
by Moneyman206 June 04, 2018
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