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！急に後ろから声をかけないでよ。
You scared me! Don't suddenly call out from behind like that.
わあ、びっくりした！こんなところに猫がいるなんて。
Whoa, you surprised me! I didn't expect a cat to be here.