Clubs and bars like to get creative when it comes to spreading some yuletide cheer. Neon signs are the logical choice, especially if a black light is involved. Intoxicated patrons might be a bit confused by this "Happy Holidays' neon sign though. If you look at it long enough, the letters begin to swim which turns this into a neon anagram just asking to be solved. It should be obvious what the letter spell.
However, after a few cocktails, this sign is definitely going to become a mess of letters to anyone who has had a few too many drinks.