I had this idea from a conversation with a colleague to automate giving him random abuse. I thought it would be hilarious if the old MS Clippy would be the messenger for the abuse. Credit to Stephen @ https://github.com/1RedOne for most of the work on this. I just adapted the concept to loop messages, his code has far more practical application :)
Key areas for customisation are $Text which contains the arrary of messages and the second start-sleep, which determines the pop-up interval.
Run the ps1 file to kick it off and you will have to end the process to stop it.