Are frightened of their own shadows - Idioms by The Free Dictionary
be frightened of (one's) (own) shadow (redirected from are frightened of their own shadows)
be frightened 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 frightened 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.