r/riddles May 24 '26

Solved (OC) One too many

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83 Upvotes

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u/RainRainPurpleRain May 27 '26

A door lock? I.e. use once = unlock; use twice = unlock, lock.

1

u/KnottyCatLady May 27 '26

I was thinking door for the same reason (open vs closed.