I have a rather nice presentation high status burmese fighting dha that the vendor (an older lady) was told by her son was a worthless 'Egyptian machete'. I told her what it ws after winning the ebay auction, she said she was going to kill him. Good thing she'd already posted the sword, she might have used it
It's not only "Caveat Emptor", but also "Caveat Venditor".
I seem to recall we discussed 'Worst vendor descriptions' here on the forum in the past.