What task did a new hire fail at spectacularly because of unclear instructions?

We started a new guy last week who has been doing great, but yesterday when tasked with putting a hotel pan of beans on a sheet pan and transferring it to the walk in, he poured the hotel pan onto the sheet pan and flooded the better half of a prep table.

It was totally on me for not doing a better job of explaining, but it was pretty hilarious and did not lose too much product.

What was the best "instructions unclear; dick stuck in ceiling fan" you have seen?

Edit: thank you for the awards, but please buy the subject of your comments a pbr or yourself one instead