Are nervous of their own shadows - Idioms by The Free Dictionary
be nervous of (one's) (own) shadow (redirected from are nervous of their own shadows)
be nervous of (one's) (own) shadow
To be easily or constantly spooked, nervous, timid, afraid, or fearfully suspicious. I can't say I have much faith in Johnny helping us on this expedition—that boy's nervous of his own shadow!
be frightened/nervous/scared of your own ˈshadow be very easily frightened; be very nervous: Since the attack he’s been a changed man. He’s nervous of his own shadow and doesn’t like to go out alone at night.