I've been racking my brains for one to add, but the only complete disconnect between my brain and reality that I can recall doesn't seem to fit the site's parameters. I thought that the word "misled" was pronounced "MYE - zeld" and used it freely in conversation, never noticing any confusion or mirth on others' part. The reason it doesn't fit is that the person who finally clued me in was John, so I was well into my thirties before I figured it out. And yes, the irony of being misled about the word misled escaped neither of us.
And you know, part of my brain still thinks that MYEzeld sounds more like what's going on when you're misled.
Update: I knew there was a reason I hated that song. "Steph" contributes the following:
Several other contributors confirm that they too were quite familiar with the hymn about the dance settee, although "Danny Kendall from Grange Hill" reports disappointment when, at age 22, he learned it was not I am the Lord of the Dancing Bee: "Bang went my vision of a giant yellow and black striped being with a halo and beard."
There used to be a hymn we sang in church when I was young. The hymn used to terrify me and I was scared to go to church every Sunday. Now I know that the words are "Dance, dance, where ever you may be, for I am the Lord of the Dance, said he and I'll meet you all where ever you may be and I'll meet you all at the dance, said he" (or something very close to this). When I was young, however, I thought it went "Dance, dance, where ever you may be, for I am the Lord of the dance settee and I'll eat you all where ever you may be and I'll eat you all on the dance settee"
And I thought He wasn't finished yet. "...thy kingdom come. Thy will be done". (as in He's not done yet) :)