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1.
to call or two way some one
"Man when you get back around the way hit me"
by CoaCoa June 04, 2004
 
2.
Accepting an offer to be included in something, ie. "count me in". Gambling term from blackjack, meaning "I would like another card".
"We're going up the road for pizza. You in?"
"Hit me."
by Domgrief June 25, 2006