look. if they push you, you push them back untill they get the picture.


retaliate with equality;

"dude! smoking that shit is bad for your lungs" you say "do some research for a change and find out for yourself that you just told a lie" and say nothing more unless they retaliate.


but keep your cool above all, and if and when they get over the top, point it out, and note that you're still calmly trying to show them the truth while they're getting overly frusterated by things they dont even understand.