Slipping cranks, drive chain slip?

What exactly is a 'hub strip' or 'stripping the hub'?

I've had the cog slip a few times after heavy skiddage, but just gave it some real hammering and then tightened up the lock ring.

The threads on the hub just go, either get flattened out or they're not straight and the cog won't lock or won't lock on straight. This has happened to me, had no money for a new hub or to attempt to get it rethreaded so I used a threadlocker and now the cog is pretty much permanently stuck to the hub. Good idea for a beater IMO.

*edit: just realised this is a hella old thread. unintentional BUMP