Pre-Flush

1. To flush the toilet prematurely, or before one is finished "going" to the bathroom-- Usually used to mask sounds or when in a hurry.

2. Having to flush the toilet before one even begins to use the bathroom, due to prior droppings or toilet paper left behind by the previous user.

1. "Dude, I had diarrhea this morning and had to Pre-Flush so my sister's friends couldn't hear. I like my sister's friends."

2. "Ok, who didn't flush the toilet? I had to Pre-Flush a giant floater before i went, c'mon!"

Pre-Flush by Americanhockey1 February 22, 2011

Preflushing 

To flush the toilet first in order to drown the sound of your farts and diarrhea. People who preflush usually shit during the flushing noises.

1. The dude in the stall next to mine was preflushing so that people wouldn't hear his violent diarrhea.

2. I had to preflush right before I let out a loud fart while taking a dump.

Preflushing by JayZed April 28, 2010

pre-flush rush 

to flush the toilet prior to taking a dump to avoid the smell, sound of embarrising clashing water, (and most of all) the waiting for the feces to go down the pipes.

Ryan- Hey man whyd u pause the game?
Chris- I have to take a dump but i promise to stay in a pre-flush rush mode.
Ryan- Alright good, thanks man.

pre-flush rush by Chris Hrris August 19, 2007

Pre-flush

To flush the water-closet prior to defication thereby lubricating the porcelain, thus mitigating the effects of a crash landing.

'Dont forget to pre-flush darling, you do know how you love to crash-land'.

Pre-flush by McGinty September 2, 2006

Pre-Flush

To flush the toilet before finishing your 'business'. Usually done when in a hurry. eg. During a movie.

Kevin : Wow, that was quick!
Dave : I Pre-Flushed so I didn't miss any of the film

Pre-Flush by UltimateBurrito May 17, 2010