Bananas come in all shapes and sizes, and that might be the fatal flaw of the “banana for scale” meme—you have to see a banana in person to know how big it is. A banana could be small enough to fit in a lunchbox… or it could be 40 feet tall.
https://www.adweek.com/brand-marketing/dave-busters-has-big-tvs-heres-a-banana-to-prove-it/