The toy emitting "ut oh" on invalid input reminded me of a phonics toy - I think it was either a schoolbus or caterpillar, where phonemes could be pressed and it would sound them out "g-oo-d" "d-aw-g" - but if as a bored parent you tried "sh-ih-t" or similar it would emit "sh-<heeheehee>" I always wondered if it was localized per-market.