What Was Your Stupidest Mistake in Trading Crypto?

Besides having invested in shitcoins. I am talking about really dumb mistakes like writing the wrong amount, typo in the address idk theres a lot of examples where you can be unaware and/or stupid.

I am unaware and stupid, as I already had 2 typos lol (im copy pasting since my last mistake so I hope it does not happen again lol). Luck in misfortune, these were small amounts but still it is annoying

So what about you. Is everybody attentive and checks everything few times? Is there maybe even someone who fell for a scam and likes to be honest about it? I am curious about your stories or if you are a clean trader and never make mistakes (besides maybe having invested in shitcoins lol)