Besides sharpening pencils, part of my job is fielding e-mail trouble calls. Stuff like, "Hey, Joe. I got an e-mail from someone I don't know. I opened the attachment but now my computer is on fire. What should I do?" or, "I have an e-mail with the subject, 'Hillary Clinton strips down to undies.' You think it's okay? I mean, does Bill know?" Such questions produce a warm feeling, so I typically answer, "Excuse me, I need to use the restroom."

Beware of cockroach sending e-mails

Joe Barnhart

But, what if an on-again, off-again friend, say, someone you had a child with, sent you the actua...