Also, when people had to stamp thing, they would angle their stamps to be “bowing” to the superiors who stamped first

The funniest thing is that you can also rotate the stamp slightly counterclockwise to indicate “I’m approving this proposal because it would be inconcievable to dissent from the group’s thoughts, but I think you’re all making a mistake by approving it” - and how much you rotate the stamp counterclockwise indicates how stupid you think the proposal is.