Flushed quadrant is a type of romantic quadrant used by trolls in the webcomic homestuck. The flushed quadrants are built on positive emotion, and include the quadrant matespriteship, which we humans call love. It also includes moiraillegience, which is the term for an incredibly strong platonic relationship for the purpose of keeping each other mentally stable.
When the sound of a flushing toilet or runningwater is impaling your ability to hear what is going on or who is talking to you.
(Two guys in seperate cubicles in a public toilet, doing there thing)
Chris: 'You got the time mate?'
Allan: (Flushes) 'Pardon?'
Chris: 'Have you got the time?'
Allan: (Flush continues) 'Hold on dude, im being flushed away here, gimmi a sec.'