Okay, now this is what I have discovered. When saying "Hey <name> high five!" or just putting your hand up as to get a high five, there is an unspoken rule. I have noticed that the person that puts their hand up first, is the person that does the slapping.

To test, stick your hand up to a friend for a high five, and dont move it at all once it gets to the maximum height. Just smile and stare at them. See how creepy the reaction is when they realize they have to do work and slowly slap hands and walk away.

Tell me im not right!