Someone who seems smart online from their using various reference sites, but when you meet them in person they're dumb as a post.
Tracy was quoting the bible and Hamlet on face book so I thought she was on my level. When I met her it turned out she was only cybersmart.
A word to the wise when talking to a potential sex offender.
I was talking to a guy online and he asked if I had a webcam and I said no, because I am cybersmart.