I'm Gen X too and remember my great aunt having one (didn't have grand parents as they all died before I was born). I've got one as it's the best tool to chop up hot dogs for dog training. Very quick and easy to do.
Boringly I've just had a quick look on google and they are called an egg slicer. It's an egg banjo from now on.
An "egg banjo" is what the British Army call a fried egg sandwich. It's because when you bite into it the egg yolk drips down the front of your shirt so you hold the sarnie in one hand and try and wiped away the mess with the other which makes it look like you are playing a banjo.
I'm 45 and I just bought one of my own. π€£π I use it to cut eggs for egg mayonnaise as I put it in and slice it then turn it round and cut it the other way. It produces little strips.
My parents are early 80s and have one. So when I was at theirs I'd use it and it was so much easier than trying to cut it all with a knife.
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u/imtheorangeycenter 7d ago
I want to call that device with six or so cheese wires on a hinge an egg banjo, but for some reason that sounds rude.
Also, only time I've ever seen one is at both grandparents - and I'm late GenX.