What does slam piece mean?

Anonymous
me and one of my best friends have been continuously hooking up for about a month or two now. We hang out besides just hooking up but neither of us have talked about what we are or make any move to bring things any further. All of his friends and his parents refer to us like we're dating but this hasn't actually been confirmed by either of us. The other day when I was hanging out with him and his friends, one of his best friends started to talk about "slam-pieces". His friend said that me and my Guy's relationship was kind of like that only in the way that he was my slam piece but said on the other hand that I wasn't his slam piece. What is this supposed to mean? can slam pieces only go one way?
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+1 y
what I mean is how can he be my "slam-piece" but I'm not his?
What does slam piece mean?
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