sweep the deck

few cards shy of a full deck

Mentally deranged; demented; insane.

play with a full deck

To behave in a manner suggesting that one is of normal intelligence, alert, and mentally stable.

rearrange the deck chairs on the Titanic

To do something pointless or insignificant that will soon be overtaken by events, or that contributes nothing to the solution of a current problem.

sweep aside

To overcome an obstacle with little effort.

sweep away

To overwhelm someone emotionally; sweep someone off their feet.

sweep out

to remove someone from a place (where they are not wanted)

sweep someone off their feet

To seduce someone romantically.

sweep something under the rug

To conceal a problem (usually an embarrassing or illegal one) expediently, rather than remedy it thoroughly.