You couldn't!

You couldn't (do that)!

and You wouldn't (do that)!

an indication of disbelief that someone might do something. Bill: I'm going to run away from home! Jane: You couldn't! Bill: I get so mad at my brother, I could just strangle him. Tom: You couldn't do that!

Common Names:

Name	Pronounced	Usage
Paol	-	Breton
Calvert	['kælvət]
ElĪNa	-	Latvian
Cedric	SED-rik	English
Anders	AHN-desh (Swedish), AHN-ders (Swedish, Danish)	Swedish, Norwegian, Danish
AnaÏS	a-na-EES (French)	Occitan, Catalan, French