don't you dare!INFORMAL
This page is about the conversational phrase don't you dare!
You can use this to very firmly tell someone not do something.
- "I'm going to tell Dad you smoked a cigarette!"
"Don't you dare!"
- "Don't you dare tell anyone else about this!"
"I won't, I promise."
My noisy neighbour said, "Don't you dare!" after I said,
Contributor: Matt Errey