Worst interview rejection?
I've got one. It was for a pretty good e-commerce company.
*It was 4th and final round*
Interview panel: If you were to implement the bidding kind of feature in our website/app like eBay has, how would you do it? Explain both HLD and LLD

Me: *Started selling my shit*

Panel: Did you ever bid for something on eBay?

Me: No

Panel: I'll get in touch with you. You can leave now.
😎