Mom: What are you doing right now?
Me: Researching on cocaine. //Assignment was about cocaine in Coca-Cola
Mom: Is cocaine a CS course or something?// So naive
Me: Yes it's a mind boggling course, some people fail to survive the course. It's practiced world wide.
Mom: ooh good good. Carry on

And my sarcasm went unnoticed until later when I told her what cocaine is.😂