out+of+one's+head
131jump out of one's skin — If you jump out of your skin, you are extremely surprised or shocked. Jane nearly jumped out of her skin when the horse put its head through the kitchen window! …
132keep\ one's\ head\ above\ water — v. phr. To remain solvent; manage to stay out of debt. Herb s income declined so drastically that he now has difficulty keeping his head above water …