My dear old dad (god rest his soul) used to enjoy finding words that it would significantly mispronounce.
I can't remember many of them now, but 'chemicals' is the first one that springs to mind.
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It's amazing how much fun everyone gets from a voice synthesizer. We used to have hours of fun at school in the last 80's on Casio SK1 keyboards recording our voices, then playing them back at different pitches and speeds. These days it's laughing at how badly sat navs try to pronounce many road and place names, or trying to get Alexa to say something amusing.
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