Let's all confess

[JimmyDavid]

Sometimes we can go hard on new guys that make stupid herp mistakes, but we were all unexperienced at some point and, of course, made our own mistakes.
Why not share our "nightmare" stuff with everyone here?

I'll start: I got a 3 to 4 foot water monitor once and loved him since the moment he arrived. He was a well fed, beautifull, TAME lizard. The very same day he arrived i decided to not mix him with another water i had just to let him settle down. So i let him in a big cardboard box with a lamp inside for heating and a bowl of water. I checked the temp and it was just fine. But i forgot that the inside of a cardboard box doesn't remain constant and it got extra hot in a few hours. Guilty as charged; the poor lizard died the same day he arrived because of a stupid mistake i didn't think of. That's my worst
nightmare mistake! how about you?