A person you may or may not have previously known, whom you suddenly stumble upon a mutual attraction or flirtation with and decide you would like to keep around a while.
girl 1: So have you hooked up with Jeff yet?
girl 2: No, but he's definitely a lucky penny. I can't jump into that just yet.
by littlewanton September 13, 2011
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A penny found on the ground heads up is a lucky penny. If you pick up this lucky penny and you notice the date it was made was on your birth year, it becomes a super lucky penny!

Giving a super lucky penny to somebody else who was not born on the year the penny was made will not give them better luck than a lucky penny would give them.
Guy: "I've found a lot of lucky pennies too, but nevermind those, I've actually found a super lucky penny yesterday!"
Guy 2: "To this day I have yet to find a super lucky penny. This one lucky penny seemed like it was taunting me by being made one year after my birth year..."
Guy: "Aww, bad luck."
by AFoolForGoodLuck April 21, 2012
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To knee someone in the you-know-what. Used when someone is really mad at someone else.
Hey today my friend was being a real jerk so, I did a Lucky Penny on him.
by Jrayden March 24, 2011
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