A symbolic gesture as old as time and my personal favorite. Above is some very impressive high fivery and the dedication is commendable, but I think the best high fives are the ones where you lean over a table, reallyyy going for that connection of slapping another person's hand, all at the possibility of draping your nice clothes over your food that the waiter/waitress has given you. So it's obvious that if your friend does not go at lengths to possibly get their clothes messy for a high five, you may have to start reconsidering your friend's priorities.