Dumbest Thing you have done distro-hopping?

I just discovered something I did so idiotic I need a stronger adjective that what is in my name.

For one of my installs, I accidentally overwrote my 1TB HDD. A few minutes ago I wanted to put back some files... and all I saw was a distro.

It confused me because I was not sure if I was on my solid state drive or the HDD.

So, those files are gone. A lot is gone. Nothing too precious, I think... It might be a tremendous fuck up.

See kids, this is why you back up. Off the computer. Oh well.

EDIT: Recovering files using Photorec. Everyone who recommended this to me is a hero. Also a hero is the person who recommended FTK, but I was too eager to use something now than to sign up to download. I still should though...