1 definition by Nick DC

When you double flush a toilet just to be courteous. Not necessarily a double-flusher, just to be polite.
Mostly used in awkward situations.
Matt was meeting his girlfriend Sarah's parents for the first time. They were enjoying a lovely meal when Matt had to take a dump.
This being the first time he had dumped in Mr. And Mrs. Di Carlo he flushed twice even though one should have been enough.
Matt demonstrated the courtesy flush.
by Nick DC April 27, 2010
Get the Courtesy flush mug.