Oops

It's traditional and expected that adults are dismayed by kids' slang, which changes with each successive generation. And kids are equally dismissive of adults trying to preempt their linguistic additions. Try using "dude" with a straight face when talking to a group of teenagers and you'll get howls of laughter. (The pronunciation is key, the vowel must be flattened out, "dood," with zero hint of a dipthong.) I really like "my bad," however. I hear it all the time while coaching lacrosse. "Sorry," after an error, always sounds slightly insincere, but "my bad" is a genuine acknowledgement of wrongdoing. Just once I'd like to hear one of our politicians in a press conference cop to a screw up with "my bad."