They don't discover every way possible for their character to look like they are doing something "untoward" on your face. I swear, the amount of mastur****** I see happening over my dead body is pretty crazy. And I don't need to git gud,(I know how often I'm at the top of the Scoreboard) I need a raincoat!
I believe the Samurai were the first to adopt this unorthodox, ritualistic, group celebration... Some consider it a lost art, it is well documented in history.
IRL I understand it took years of dedication and a deep understanding of the written scriptues... Warriors would train for years in the art of Bew-kak-aye and only the best were left standing. Tis an odd tradition, but who are we to judge?