If you're in jail, and I'm your attorney, please do not send things to me in envelope marked "Legal Mail" if they have previously been up your butt. Or anyone else's, for that matter.
Including but not limited to "kites" that aren't intended for me and that are marked "Do Not Read."
Seriously, I only want actual legal mail.
P.S. - Those kites aren't privileged. If they're for someone else and I'm not supposed to read them, they're not attorney-client communications.