jump out of your skin
US /dʒʌmp aʊt əv jʊər skɪn/
UK /dʒʌmp aʊt əv jʊər skɪn/

1.
吓了一跳, 大吃一惊
to be extremely surprised or frightened by something
:
•
The sudden noise made me jump out of my skin.
突如其来的声音让我吓了一跳。
•
When he tapped me on the shoulder, I nearly jumped out of my skin.
当他拍我肩膀时,我差点吓得跳起来。