Alternate:
Down
Current:
In
Three little pigs: "I'll huff, and I'll puff, and I'll blow your house ___"?
The story about the Big Bad Wolf trying to blow down the three little pigs house was first published in the 1840's, but it's thought to be much older than that.
Ask people to complete the line, and you may be in for a surprise. If they answer "Down", they may be experiencing an MMDE, because all references today show it as "In".
The fable continues to the modern day, with the pigs appearing in the Toy Story and Shrek movies and they even feature in a full production stage musical. There's been some controversy over the years regarding their names, but the consensus today seems to be Browny, Whitey and Blacky.
Origin
Although the story is much older than the first versions published in the mid 1800's, some details were different, in fact the first published version had three little pixies rather than pigs.Later, Disney made the story really famous when it featured them in a 1933 cartoon, and named their pigs as Fifer, Fiddler, and Practical Pig. In their version, the wolf merely gets his backside burned when he comes down the chimney and runs away, rather than being boiled to death in the earlier versions.
Warner made a version in 1943 called Pigs in a Polka, and in 1943 a wartime themed version was made with the wolf being a Nazi. Later, a twist came in 1952 where a version was made from the wolfs point of view where the pigs were the bad guys. 1957 saw Warner's The Three Little Bops where they were jazz musicians, with the houses replaced by nightclubs.
Chinny Chin Chin
It's quickly demonstrable as "In" because it needs to rhyme:
Little pig, little pig, let me come in.
Not by the hair on my chinny chin chin.
Then I'll huff, and I'll puff, and I'll blow your house in.
So why do so many people say "Down"?
