On customs, I had one go through in what looks like 4 minutes today. At this point they have been bombarded by Skoak taped boxes into the US, and just toss them through.
My wife saw a nice blue envelope on my desk the other day and opened it thinking it was an invitation. I heard my full name yelled and "please tell me you didn't buy a $5,000 shoe!". Not that I'm hiding anything, but future envelopes may go straight to the trash.