At the end, if you listen closely, there is a whisper. It says 'I am still here', but when reversed, it says 'Three letters back'. This applies to decoding certain codes.
What codes, you ask?
Well yesterday, we talked about Bill Cipher. Check this out:
But that's not all.
As you all should know by now, in Gravity Falls, you must keep your mind sharp and eyes open.
The whole 'Three Letters Back' thing is known as the 'Caesar Cipher'.
In Mystery Shack Mystery, look on Stan's desk to see a cryptogram that reads "HYHU QRWLFHG VWDQV WDWWRR." Once decoded, it reads "EVER NOTICED STANS TATTOO."
Remember? This is how we know Stan's tattoo must have some importance to the show [I told you guys to make note!]
Another game, Rumble's Revenge, has 12 cryptograms:
It spells "MY NAME IS BILL".
As in, Bill Cipher. Told you he was important! Note these messages though, since he wrote them.
Have you been watching? During the credits, there is always a cipher that needs to be solved. Whether it is an important hint or funny joke, it has always been there.
The following photos are the credits from the episodes using the Ceasar Cipher, with the decoded message. Click the pictures to see the decoded messages:
In The Legend of the Gobblewonker, it says "NEXT WEEK: RETURN TO BUTT ISLAND". This is more of a joke, since in the following episode it did not take place there at all.
And in Headhunters, when it says "HE'S STILL IN THE VENTS"? This means Wax Larry King is still there. He's still alive...
"CARLA, WHY WON'T YOU CALL ME?" from The Hand that Rocks the Mabel is not a spoiler. In the Gideon's commercial for the Tent of Telepathy, at the end, the narrarator says, "Carla, I’ve always loved you but I never had the guts to say it."
Remember the dolphin man from The Inconviencing?
And finally, "MR. CAESARIAN WILL BE OUT NEXT WEEK. MR. ATBASH WILL SUBSTITUTE" from Dipper vs. Manliness. This is different from the other codes, since it is not referring to the episode itself.
'Mr. Ceasarian' refers to the Ceasar Cipher. 'Mr. Atbash' refers to the Atbash Cipher. Which leads me into the next part...
In the next episodes, in the credits, they no longer use the Ceasar Cipher. Instead they use the Atbash Cipher.
"PAPER JAM DIPPER SAYS: "AUUGHWXQHGADSADSADUH!" is a joke, in reference to it's episode, Double Dipper.
The cryptogram from Irrational Treasure, "E. PLURIBUS TREMBLEY", is actually in Latin. It means 'Out of many, Trembley'.
"NOT H.G. WELLS APPROVED" from The Time Traveler's Pig is in reference to H.G. Wells. He wrote a fictional book on time travel.
"SORRY DIPPER, BUT YOUR WENDY IS IN ANOTHER CASTLE" from Fight Fighters, "THE INVISIBLE WIZARD IS WATCHING" from Little Dipper, and "BROUGHT TO YOU BY HOMEWORK: THE CANDY" from Summerween are jokes, in references to their episodes.
And the final Atbash Cipher from Boss Mabel: "HEAVY IS THE HEAD THAT WEARS THE FEZ". This means Mabel and Stan. When they wear the fez, they might be strict, rude, and to the point, but it is all in order to help the business. [Or, they might be talking about just Grunkle Stan. And we all know that he is a suspicious guy...]
Thought that was all?
"VIVAN LOS PATOS DE LA PISCINA" is in Spanish, though. It means "LONG LIVE THE POOL DUCKS".
And "HAPPY NOW, ARIEL?" from Boyz Crazy is a message from Alex Hirsch, the creator of the show, to his sister Ariel. When she was younger, she was obsessed with Lance Bass from 'N Sync. So, Alex got him to voice the band in the episode, Sev'ral Timez.
The decoded message from Dreamscaperers is kinda self-explanatory.
Now you know about the codes. What else can I tell you? Find out tomorrow in 'Of Truths and Theories'!