"So there!" How to say it in español?
the shortest expressions are the most difficult sometimes - can you help me with this one?
I guess if you're trying to say "I told you so" I'd probably go with "¡Te lo dije!"
Even something like "¡Allí está!" (there it is!) would convey the message that you told someone something and it came true.
Or if you've proven somebody wrong, ¡pues toma!
I think you need a piece of context as Marianne has intimated, for instance,
I´m not going, so there! - Pues no voy, y fastídiate.