Blacklight or Glow-in-the-Dark Tattoo

Ok, let's say that during the day you're a hard working executive in a conservative company but at night you turn into a party animal and go clubbing and to other dimly lit after hours haunts.  You'd love to wear visible tattoos but are concerned they would think less of you at work. 

So here's the solution.  A tattoo that can only be seen under a blacklight or that  glow's in the dark so that when you go out clubbing, it can be seen and appreciated. And your day job is safe.

 It may also be cool for your bad boy image in bed at night, if you get my meaning.

This an idea from G-force.