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 poorStanley with the oatmeal, for when they pulled out the hose (from his anus), it (the oatmeal) just came back out... furp...furp...furp."
a foamy burp resulting from pounding an entire beer and having it foam up so much that foam is burped filling the belchers nose and mouth and exelling all over the place
the drinking croud's mouths were all left agape after being awstruck by the tremendous furp that followed Rralph's smooth execusion of pounding an entire 40 oz in one swift chug