catch someone napping

US /kætʃ ˈsʌm.wʌn ˈnæp.ɪŋ/
UK /kætʃ ˈsʌm.wʌn ˈnæp.ɪŋ/
"catch someone napping" picture
1.

pillar a alguien desprevenido, sorprender a alguien

to surprise someone when they are not prepared for something, especially when they are not paying attention or are doing something they shouldn't be doing

:
The teacher caught him napping when he was playing games on his phone during class.
El profesor lo pilló desprevenido cuando estaba jugando en su teléfono durante la clase.
The sudden inspection caught many employees napping, as they were not following company protocols.
La inspección repentina pilló a muchos empleados desprevenidos, ya que no estaban siguiendo los protocolos de la empresa.