Well, he would have had to either open the door or lower the window to put the rat inside the mailbox, wouldn't he??
I'm beginning to wonder if some would have a hard time believing Ronald was to blame for anything, if Jesus himself came back and said it.
Didn't Mrs Pierce say the juvenile put the object into the mailbox?
So, RC could truly say he didn't do it...
(maybe he just cut the head off for her)