Entry tags:
debugging a toy
The detective work and presentation in the top answer to this question on English Language & Usage are quite impressive. What is that picture of a word beginning with "Y" supposed to be?

I haven't read all the comments, but it appears there's a lot of forensics to be found therein, too.

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I wouldn't have thought of "yacht". Maybe "yo-yo" (that came up in the linked post), or "yarn" (ball or skein of).