I got one of the remote control "eggs" as a gag gift in a Secret Santa party. Of course, my bf at the time saw the gift, and I believe him when he said he didn't put it in the pile. Anyway, we used it and it was great, especially when I had the app on my phone and I controlled it.
One evening, I lost a bet about something, and my price was to wear it to class the next day. Not a problem for most of the day - actually kind of nice to have something inside me. But we shared a physics class in one of those giant lecture halls. My bf decided to sit across a gallery from me, and texted me "to strap in and enjoy the ride".
I instantly knew what he meant. For the next 90 minutes, it was buzzing and vibrating, and I was squirming and smiling, and doing my very best not to moan. At least he had the decency not to flip it on when I was asking a question or answering one. The notes I took were a little undecipherable. I think I had 4 or 5 nice little orgasms that afternoon, and a pair of totally soaked panties. The sex was great that night.
We used the egg quite often after that - especially in physics class and anywhere else he could observe me from a distance.