Wait here, I shall be back in a jiffy.

He believes in the policy of <u><em>making hay while the sun shines</em></u>.

To draw a bead upon

To take with a grain of salt

To give/get the bird

To hit the nail right on the head

He has been working <u><em>on and off</em></u> for several years on this research project.

To beat the air

To see eye to eye with