Scare the shit out of (one) American British rude slang
To frighten or terrify someone abruptly or severely
He cosplayed into a zombie, which scared the shit out of me!
The sound of the ambulance scares the shit out of us amid the current severe Covid 19 wave.
My brother scared the shit out of me by turning the light off while I was watching the thrilling film.
To be surprised by some sudden occurrence
To greatly surprise, shock, or confuse someone
An exclamation of shock or surprise
I'm not stupid or easily scared.
The verb "scare" should be conjugated according to its tense.