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1.
A man that sucks the ejaculatory juices out of another man's ass, following a brutal assault in the anus.
Leif, your so naughty, get your felch monging head outta my caboose.
by Hot Carl February 19, 2005
 
2.
One who loves the act of using a paper towel tube or toilet paper roll and lubricant to insert a small rodent in their ass.
Simon, Matt and Dennis the felchmongers practice the act of felching daily at 3:09 PM. They are ridiculously aroused by this act of rodents being inside.
by AngryCPET March 23, 2007
 
3.
someone who takes a straw and inserts it into spmeone's ass and sucks farts out, then turning around and hoarding them.
David, get outta my ass, you felch monger!
by phoenix1984 September 15, 2005