びっくりした

interjection

oh my god!; wow!; you got me!

Exclamation of surprise or fright; often used when startled by something unexpected.

See also: びっくり

• びっくりした！急きゅうに後うしろから声こえをかけないでよ。

  You scared me! Don't suddenly call out from behind like that.

• わあ、びっくりした！こんなところに猫ねこがいるなんて。

  Whoa, you surprised me! I didn't expect a cat to be here.