Too funny!! In my work as an instructor, I too have said something in a nonchalant manner only to be surprised by a giggle or a laugh. Its not unusual for us all to laugh during training sessions because I’m the one who sets the starting tone of the day….fun!
The funniest part of your story to me is imagining what the look on your face would have been as you delivered the “punch line.” That is what put them over the edge.
You have a little creativity brewing perhaps?
Ramblin OnREPORT ABUSE