1st player accuses 2nd player of breaking a law/rule. no matter if it is a justified accusation or not
2nd player tries to prove his own innocence. then he accuses the next player and so on...
situations can happen anywhere: on the road, in the restaurant or in pb2.
Ex:
1) you've been trying to break into my neighbor's house, i have a video of that
2) i'm your neighbor. you've got drugs in your car
3) those are for medical use only. you were hacking in stryde-sniper
4) actually it's just a lag. you are getting arrested for stealing a lot of money from my credit card
5) etc.
6) etc.