UIs that have random symbols
My favorite was the Windows Phone interface circa 2011 or so. They had a "save" button (I forget what you actually had to save on a phone) that was the standard floppy disk icon (ironic for a phone) except it was elongated and leaning to one side. When I first saw it, I thought it was a semi trailer tipping over and couldn't imagine what it was supposed to be for.
Ha ha, I just looked it up: there are five Domino's Pizza restaurants in Vietnam.