(figuratively) to save one's skin, to save one's bacon

chamois leather, shammy

(figuratively) to risk one's neck, to risk life and limb

(transitive) to be infatuated with; to have a crush on

on edge, raw, very sensitive, emotional

comfortable in one's own skin, comfortable with who one is, feeling good about oneself, well-adjusted, together

(figuratively) to be thick-skinned, to be resilient

not comfortable in one's own skin, not comfortable with who one is, feeling ill at ease with oneself

(vulgar) to be expensive, cost an arm and a leg

(idiomatic) to cost an arm and a leg: to cost too much, to be very expensive