I had a really fun one with my Google account the other day. It was the one where you had to select the number it was showing on “the other screen”. However it was trying to show it on my same phone I was trying to log in on, only to immediately overwrite it with the prompt to select the correct number. Cue me sitting there having to guess the right number like 6 times before finally getting access, getting logged back out every time I failed to guess right