Under the shirt, bra still on. Often followed by a slap to the face and a lonely night of masturbation.
She had such a nice rack, but I only got to first and a half base, so I had to spend the rest of the night with me and my monkey.
by Anonymous March 16, 2003
Getting sideboob but not the whole boob during a hookup for just feeling a girl up.
Guy one: How far did you get with her?
Guy two: First and a half base!
Guy one: Wha?
Guy two: Ya know, getting just the sideboob!
by NoodlingAround January 17, 2013

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