What are some the more idiotic and stupid mistakes that you know you shouldn't have made but did anyway. Yes this includes other none gambling stuff like sending btc to the wrong address. I'm interested to find out the stupid things other people do. 
I have done the biggest mistake of my life. This was when I began gambling on bitsler. I got some 400 doge for doing some retweet task I sent it immediately on bitsler and watched some video on youtube about a money multiplier trick. I applied the trick and it worked. My 400 doges instantly became 4000. I didnt know much about these factors and all. I kept on doing such gamble for a few days and you won't believs it went till 40000 doges. I made 4000 doges which were worth 300$ from ashes. I thought that with such a regamble amount I can earn so much what if I increase it? I took the meter to 95% if I lose and tada everything just vanished in the very next gamble moreover sadly that trick didnt even work again.