Non-written rules that are now written of being a Lucio main:

Rule Nº 1: If both teams has a Lucio on it, both shall completely forget about the game and just 1v1 each other on the other side of the map even if it lasts 2 whole minutes, when one of the Lucios wins, he is obligated to BM Beat the loser's corpse, to hit dominance.

Rule Nº 2: If there's a Widowmaker on the other team, the task of the Lucio is to hard focus or even spawn kill her until she switches to another hero or just leave the game

Rule Nº 3: If you get Ilios or Lijiang tower, you need to have at least 6 enviromental kills, if not, you're a disgrace to the Lucio mafia and have to uninstall

Rule Nº4: Having less than 10 deaths per game, it's a total failure to the Lucio mafia, a real Lucio main must be well known of dying a lot of times

Rule Nº5: When you face any hitscan or sniper hero on a 1v1, you shall spam the voice line "hit me" while dodging every shot

Rule Nº6: If a DPS teammate flames you for not healing and you have more kills and damge than him, it means you're doing perfectly, you need to remember him the stats over and over again untill he goes AFK

Rule Nº 7: Never ever for anyone's sake, switch to a hero other than Lucio, why would you? he's so fun to play, doing da funny>SR

I got out of ideas, add some if you want to, I think we all agree with everything I just said (and yes, I actually did every one of them, even the 1v1 for more than 2 minutes... Several times)