There's some really complex term I heard a few months ago for what it's called when your brain basically goes into a "black zone" (as opposed to red zone ect) and sort of locks down, doesn't know what to do and therefore will start repeating things or actions even if it makes no sense (a great example would be if someone was in a building on fire and pulled on a door that was clearly locked/jammed and yet they just keep pulling on it instead of going to another door)
This is the same basic thing that happens when someone repeats the same dumb shit 6x in a row "you suck, you suck, you suck"
it's not like the guy didn't hear you the first couple of times, so by the third "you suck" you're just proving that the reasoning part of your brain has shut off.