[Learn Korean Words with K-Pop – Gee by Girls’ Generation]
In the chorus of “Gee”, the girls sing “깜짝 깜짝 놀란 나는 oh oh oh oh oh.”
깜짝 is an adverb to express being suddenly surprised or startled. This word goes well with the adjective 놀라다, which means “to be surprised.” Nevertheless, 깜짝 is an extremely common word in Korean and is often used as an interjection. Try using it the next time your friends surprise you!
= OMG!/Oh my goodness!/Holy Crap!
2) 깜짝 놀랐잖아!
= You really surprised me!
If you want to study more click here: http://www.talktomeinkorean.com/lessons/kpop-gee-1/