Scare, bore, etc. the pants off somebody - Idioms by The Free Dictionary
scare, bore, etc. the pants off somebody
scare the pants off (of) (one)
To terrify one. The sound of the fire alarm scared the pants off of me at three in the morning.
scare, bore, etc. the ˈpants off somebody (informal) scare, bore, etc. somebody very much: He would creep up behind people and scare the pants off them. ♢ He was clearly boring the pants off his audience.