LOL! I could write a script to do that for them with no need for admin privileges. My friends and I used to prank eachother as often as we could, which was great fun. Cynthia would be behind this if it is a prank, as she is the only one with even close to enough knowledge to do it, and access to both computers besides me in this house. I would not put it past her.
However, she is not a coder, and I will admit to having pulled several pranks on her in the past. Not nice, but it was funny LOL
An EX friend of mine once told me about a prank he played on one of his friends at work. He changed the sounds for inserting and removing a USB item to sexual sounds. So, for example, when a flash drive was inserted it would say "Oh yeah!", and when removed it would say somthing like "Leave it in baby!". I almost died laughing.