There are a lot of mysteries surrounding David S. Pumpkins, the deeply confusing "Saturday Night Live" character played by Tom Hanks -- like who he is, why he's in that haunted house, and what the "S" in his name stands for?

That last mystery has been solved by "SNL" star Bobby Moynihan, who co-wrote the Halloween sketch with fellow performer Mikey Day and writer Streeter Seidell. And here's the answer:

"We said Simon," Moynihan told The Huffington Post. "David Simon Pumpkins." Aha!

And how did the trio come up with such a weird character who went on to become a huge viral sensation? As Moynihan explainsed, "Me and Mikey Day and Streeter Seidell were trying to write something together. We like working together. Me and Mikey just wanted to do some weird dancing thing, and it was a lot of weird ideas, and around 5 o'clock in the morning, Mikey just went, 'What if he was David Pumpkins?' And then I said, 'What if it was David S. Pumpkins?'"

And "SNL" history was made.Want more stuff like this? Like us on Facebook.