This was a while back... Like 20 years ago. I was doing some crappy development with asp/vbscript. Once I had a task to send emails in certain cases and while testing, I used my personal mail as recipient. In a loop. If you ever did asp/vbscript you know how easy it is to have an infinite loop... And my mail was forwarded as text messages to my phone. I deleted incoming text messages for days.

And I made the same mistake next week.