Here's another "My Bad!"
Mark (age 4): "Dad, can I ask you somefin?"
Aristos (age 31): "Sure buddy, what's up?"
Mark: "How old do I haf to be when I can say 'shit' and not get in trouble?"
Oops. My bad.
This comes two days after I dropped something and roared "Gosh darn it!"
Mark looked at me and said, "Don't you mean 'goddamn it'?"
Oops. My bad too.