1 definition by Metal Maven

Refers to a girl who you have on the side.

You have a wife or steady girlfriend - she is your (#) One.

The girl on the side or the one you stash away - she is your (#) Two.

Commonly used by musicians to describe the girls "on the road."

In some cases, even if you have no "number one," a random hookup or a girl who will never be considered for the "one" spot, can also be considered a "two."

Also referred to as "doing the two."
"My wife/girlfriend isn't around, time to find me a two."

"You gonna do the two tonight?"

"Where my two's at?"
by Metal Maven August 11, 2013
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