I like the rather good thread on memorable Quotes from the Mudcat Forum.

From time to time, what is sometimes seen when one's glasses are not clean (or are are empty!), or when one hasn't had that morning coffee yet - or after too many cups of, er well, coffee. Somehow the mind jiggles things around but adding or removing or swapping or substitution words, and what is seen is not what was written, or what the author intended.

For example:

"Personally I prefer to play and/or listen to the music than to have a good time."

which is not quite what was actually there, and which caused me to stop and think, then realise that I had to read that again!

What the original was:

"Personally I prefer to play and/or listen to the music to have a good time."

Robin