Comes from the infamous scene on
Good Times where Florida throws the punch bowl to the floor, says "damn, damn, damn!" and starts crying when grieving over James' death.
Today it can be used as a comical
interjection, and Black folks are the most likely to get the
reference.
Man: You caught my eye and I had to stop...may I call you sometime?
Woman: Thanks for asking, but I got a boyfriend.
Man:
Damn damn DAMN!
<woman giggles>
I walked
in the room and was like "
damn damn damn!" from the pungent must that curled my nose.