These days, Dougherty calls McCain a “chameleon” who is “flopping all over the place” to make himself attractive to voters.
Gone are the wavy curls, glistening with sweat and flopping a full second behind his every move.
Assad, the Syrians who hate him, and Iraqi Sunni tribesmen are all flipping and flopping.
c.1600, probably a variant of flap with a duller, heavier sound. Sense of "fall or drop heavily" is 1836, that of "collapse, fail" is 1919; though the figurative noun sense of "a failure" is recorded from 1893. Related: Flopped; flopping.
1823, in the literal sense, from flop (v.). Figurative use by 1893.