rub salt in the wound

Attic salt

Pointed and delicate wit.

covenant of salt

A long-lasting agreement.

not worth salt

Worthless.

old salt

A seasoned sailor, especially one who is hardy and forthright in manner.

put a band-aid on a bullet wound

To inadequately treat a serious situation.

rub down

To rub from top to bottom, e.g. for cleaning, stripping paint or massage.

rub elbows

To associate closely; to consort, mingle, or socialize.

rub in

To make a point in an irritatingly emphatic manner.