Carry On Nurse 1959

British b/w farcical comedy.
Late in the film some patients on a men's ward decide to take over the operating theatre one night; one of them wants his ingrowing toenail procedure brought forward. To achieve this they have to tie up and gag the nurse on duty. So that she isn't missed, one of the men puts her uniform on and sits in her chair. When this deception fails the bound nurse is discovered by a colleague hidden in a bed and released. The discover heads for the operating theatre, the man in the nurse's uniform goes with her, the released nurse chases them asking for her uniform back.