1 definition by Braveheart Brothers

When you know your "in" with a fine piece of ass.
-tyler and joe are at a party talking to two very attractive girls that quickly invite them back to their place. As they follow them into the house they look at each other, and they know

"we got an Ace on Base"

- After approaching a girl she quickly writes down her number on your forearm....Ace on Base
by Braveheart Brothers April 24, 2011

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