Could be that these people know eachother. Maybe asshole driver is scamming someone and bragging about it. Anonymous letter writer is fed up, but not into actually confronting anyone, so they leave a passive agressive note instead so asshole driver knows they aren't being cute.…  more»

Carl is a no good ex. The note writer is trying to keep away drama and tragedy…  more»

I think it means box as in vag. Like the girlfriend was like "I am just a box to you and so we can't date because all you ever want to do is have sex and you don't care about my interests or beleifs." And the partner was like "If you were just a vagina to me, I wouldn't be all upset that you just dumped me, I would instead be pleased to never again have to hear you agonize about what your hamster is getting for it's birthday, but that is not the case.  more»