Flump

To fall without grace into a seated or laying position.

Don't flump down on the bed!
Or

That kid just flumped down on the couch and almost broke it.

by Kcraig115 December 18, 2016

flumping

The action of fixing your appearance by looksmaxing but no matter how hard you try you will not be up to your own standards

That guy is always flumping!

by willywinka38 December 1, 2023

Flump

Totally screwed up;not right. Not following justice. Said by Michael on Zoey 101.

Every woman ever: Im going to treat girls better than you.
Men: That's totally flump!

by Butt-Face Magee August 22, 2018