These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU (Comes out as a big, long "Uhhhhh", with a short "ooh" at the end not featured in videos.)
999999 (A very long string of nines is read as nine-nine-nine, nine-nine-nine, and so on if it is more than 18 digits long. The text-to-speech software tends to read out numbers with more than 18 digits in groups of 3 digits each.)
John Madden! John Madden! John Madden! John Madden! John Madden!
Nightmare Fuel: An update brings you to the dark side of the moon. AKA: Everything is pitch black. There's also a glitch with too many text to speech voices overlapping. This can result in a rather... disturbing situation.
The result of typing "EST PST CST MST EST PST CST MST" counts as well.