There is a nice 'how to deal with Alignment' article over on WotC.com:
If attempts to be true to alignment are seriously disrupting play, you as DM might have to resort to metagame solutions. Applying XP penalties, negative levels, or curses can go a long way toward keeping players from disrupting the game with unnecessary alignment-based arguments.
Yep, whenever I want a way to end in-character arguing, making it into OOC rage is my favorite tactic...
me wrote: Goddamn it, would you guys quit fvcking around and come up with a plan instead of being such jackanapes.
"But transportation issues are social-justice issues. The toll of bad transit policies and worse infrastructure—trains and buses that don’t run well and badly serve low-income neighborhoods, vehicular traffic that pollutes the environment and endangers the lives of cyclists and pedestrians—is borne disproportionately by black and brown communities."
Awesome. Now there is official support to smack people with an xp penalty, a negative level or a debilitating curse if they happen to be argumentative. I guess maturity simply means 'exposed nipples' in WotC-speak.
weasel fierce (not me) wrote: I make a cut in the XP awarded, if a player is consistently playing in a disruptive sense, I.E. making the game less fun for everyone involved. (...) Negative levels and curses are out of whack though