The sound a fart makes when you've been holding it too long and it reverses back up the colon and into the gut. Eventually it may emerge as a 'bistulum' (ass scented beltch).
by RAFFO November 2, 2003

by Awesomes007 September 14, 2006

by johnny woo June 21, 2007

The sound associated with intestinal gas and raw oatmeal are expelled from the anus following an unsuccessful feeding session with an anal feeding tube.
"After the disease progressed too far, they could not even feed poor Stanley with the oatmeal, for when they pulled out the hose (from his anus), it (the oatmeal) just came back out... furp...furp...furp."
by Winky November 22, 2003

when a person swallows air to burp while they are taking a smelly dump, so when they burp later on it smells like a fart.
by Pur9Le ParTy July 4, 2010

by Strong Island Kid February 24, 2010

A Furp Derpler is one whom takes great pleasure in crop dusting and waiting for the victim to be overcome
by Millsbilly Bobert November 14, 2020
