FLOPPING

To fall heavily due to lack of energy.

"He flopped down in front of the television, exhausted from work."

To cause to drop heavily.

"The tired mule flopped its ears forward and trudged on."

To fail completely; not to be successful at all (of a movie, play, book, song etc.).

"The latest album flopped and so the studio canceled her contract."

The motion of something that flops.