burst (one's) bubble

To bring someone back to reality, especially if they are dreaming or fantasizing about something unrealistic. Look, I hate to burst your bubble, but there is no way you're getting into Harvard! You're a C student!

Common Names:

Name	Pronounced	Usage
Anastasiy	-	Russian (Archaic), Bulgarian (Archaic)
Thracius	-	Ancient Roman
Toma (1)	-	Russian
Elisabet	e-LEE-sah-bet (Swedish, Norwegian), E-lee-sah-bet (Finnish)	Swedish, Norwegian, Danish, Finnish, Spanish, Biblical Greek
Elikapeka	-	Hawaiian
BrÜNhild	BRUYN-hilt (German)	German, Germanic Mythology