It's easy to have fun with remote control if the "victim" isn't aware
I had similar fun using the remote connection feature of SMS back when SMS was a brand new product
At the time I was working for a very small reseller, far too small to actually need any of the features of SMS but as we were selling it and I might be called on to support it* I'd installed it on a couple of test machines to play with before rolling it out to a select few live in house machines
*Yes, I'd been on the official Microsoft SMS training course at their original Reading, UK offices but that course was a complete shambles to the extent that we, and I assume the other trainees, got a full refund for the course
Almost everyone in the company shared one open plan office (as I said, we were a small company) with my desk being tucked away in one corner looking out at the rest of the office from where I could see the desks\screens of a number of people including one of the sales girls
Seeing the opportunity for some mischief I remote connected to her PC and I'd periodically move her mouse just as she was going to click on a button, said mouse movement wasn't great but it was enough to cause her to miss the button she was trying to click on, sometimes I'd only cause her to miss once other times she'd "miss" maybe 2 or 3 times on the trot before I'd let her actually click the button
I was able to see from her body language that she was getting a confused but anytime I could see she was really focussing on where she was clicking I wouldn't do anything only for the mouse to then "miss" again a little while later after she'd relaxed
She even called me over at one point saying her mouse was doing strange things and I dutifully checked the mouse out including taking the ball out and checking if the rollers were gummed up but for some reason I was unable to find anything wrong with the mouse and me clicking around various windows worked fine as it did when I stood and watched her to "see if I can spot if she's doing anything strange to cause the problem"
This went on for maybe 30 minutes all told until one of the sales guys came over to talk about something and seeing that I was struggling to keep a straight face asked me what was going on to which I showed him what I was up to
It only took another minute or so of the pair of us "giggling" in the corner for the sales girl to turn to us and say "it's bloody you messing with the mouse isn't it?" at which point we both burst out laughing
Thankfully the sales girl took it all in good grace but she did call me a few names afterwards