1 definition by JayCeeDee

When you are grinding with a girl, or doing any chest-to-back dance, and you get an erection that is therefore "scratching" her back. Depending on the severity of it and how intoxicated the girl is she may not feel it at all.
Ex. I popped 2 Viagra before coming to the club, girls get ready for the back scratcher.
by JayCeeDee March 5, 2015
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