1. The act of puking, pissing, shitting, and cumming all over a person as an act of humiliation, thus creating a
disgusting rainbow of different colored substances.
2. When
one has so poor of a fashion sense that you can only describe what they're wearing as a "
dirty rainbow."
1. I heard Alec gave your mom a
dirty rainbow last night when she was passed out.
2. Did you see what Alec wore to the
dance last night? He looked like a
dirty rainbow!