Blue moon: "an astronomical phenomenon"

Blue Moon / You saw me standing alone / Without a dream in my heart / Without a
love of my own / Blue Moon / You know just what I was there for ...

Things that happen once in a blue moon:

• Craig turns 28
  
• The tramping club has a party (not!)
  
• Looking forward to Monday
• Finding 5 bucks hidden somewhere in your wallet
• You dress up as an actual moon
  
• Everyone brings sauce and no one brings bread
• Aliens, pirates, cross-dressers, or David Bain look-alikes attend a vuwtc party
• Craig's birthday presents are not sourced from the tip shop
• EVERYBODY comes in costume