This has been the case, more than once.
Recently, my mom and I looked EVERYWHERE for her favorite cane, and couldn’t find it. We took a break to clean up the kitchen, and I opened the fridge to put stuff away, and found her cane hanging from the high shelf on the door. She’d hung it there when she needed both hands to shift stuff around.
Also, the TV remote, multiple times.
Also, that’s a good way to remember to take your lunch to work in the morning. Get it ready the night before, and put it in the fridge with your car keys on it. The next morning, when you can’t find your keys, you’ll eventually remember that you put them in the fridge with your lunch.
It’s not obscure at all, and it isn’t limited to just restaurants. I’ve known the term 86, referring to removing something or someone, since I was kid.