してやったり

interjection

got you!; tricked you!

Exclamation of triumph when one has successfully outwitted or played a trick on someone. Derived from the past tense of してやる (to do something for someone, or to do something to someone's disadvantage).

See also: してやる

• してやったり！まんまと引ひっかかったな。

  Got you! You fell for it completely.