... is like when you zap a wand of wishing (0) for the last time before throwing it away and it says
You wrest one more spell from the worn-out wand.
I know, I need to stop playing this game. I've grown too attached to it though. =D
(For those who aren't familiar with hack(5): According to the source code, the chance of that happening is 1/121. Yes, it's pretty slim. ^^)