Top definition
A dense object dropping into water, usually causing the water to shoot upwards making the 'ploomf' sound.
For best auditory effect, say outloud and with the back of your throat.
The onomatopoeic sound of a long turd satisfyingly dropping into the bowl....

Man on the throne...
*grunts with effort*
Ploomf!
by domstar101 November 18, 2012
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