Top Definition
An individual (usually a guy) who is cheating and bounces back and forth between partners.

I came up with this in a dream!! I was dreaming about my boyfriend cheating on me. In my dream I asked him if his mother knew he was cheating. He said "yes, and she called me a rubber rat".
Does your mom know you are cheating on me? Yes, and she called me a rubber rat.
by teecaz January 18, 2012

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