See, the thing is, that two people build a thing together, and it's theirs. It doesn't belong to just one of them. They sit down to play a board game, and they agree to the rules, and then one of them is jim-jamming the cards, or frosting their dice, or some other rule-breaking crap. And what's the other one supposed to do? What do you do when somebody you trusted takes the whole thing and throws it in the trash? Destroy their car, clearly.

This, ah, bit will make sense by the end of the episode. Trust me. I'm a doctor.