Facebook karma
When a friend tags you on Facebook to praise you, then deletes the post right in front of you like a coward, making you look like a fool. Then you end up getting cursed by the internet or your mom finds out.
My friend tagged me in a post saying I'm the best at math, then deleted it. I got a C on my test the next day.
My ex tagged me in a post saying I was the best lover ever. Then she deleted it. I got dumped by my new girlfriend.
My dad tagged me in a post saying I was the best son ever. Then he deleted it. I got grounded for a week.