so there!

so there

childish An exclamation added to a statement for emphasis or as an expression of defiance. The teacher said she liked my project the best—so there! Oh yeah? Well, I'm going to eat all of my Halloween candy before dinner, so there!
See also: there
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

ˌso ˈthere!

(informal) (often said by children) used for emphasizing your satisfaction with something or for emphasizing a refusal, etc: I got a better mark than you. So there!Well, you can’t have it, so there!
Farlex Partner Idioms Dictionary © Farlex 2017
See also: