Seegee:
Speaking of Star Trek they have their own green skinned race, those red haired girls, the one in the most recent movie looked rather spankable.
They also emit pheromones that can drive you insane and eventually kill you. The one we saw at the academy probably had to have herself drugged or genetically altered to not be a danger to the humans.
So yeah, you can spank an orion girl, but I'd recommend a hazmat suit.