Fun In The Dark Sign (InV)

There are many potential occasions that this sign could come in handy, be it a late night rave, a stargazing party, a gothic party. You name it, you could celebrate it with it. I wonder how many of you thought of something between the sheets when you saw this sign...
You all need a better imagination if that was the first thing that you thought of. Once you've thought of it have a party for it and share your ideas in the feedback page.