The gas bacteria in the large intestine produce when feeding on your feces. It's what gives crap and farts their smell. The release of flatus is called flatulence.
Not to be confused with the term "flatus", meaning fart gases, this word with the same spelling is pronounced "FLAW-TOOSE". Multiple meanings, but basically the Alaskan equivalent of the Hawaiian "Aloha".
Can be used to mean tired, drunk, bad or unfortunate. Also can be used as a greeting to say hello or goodbye. See examples below.
Student 1 : I have to move to Mumbai, I have no clue how to find accommodation.
Student 2: I have a solution for you.
FlatUs!
You can find everything you want!
From accomodation to food and even travel help.
I had been passing what may have been the world’s most noxious and protracted fart when my grandma walked in, so I employed flatus interruptus in an attempt to spare her!
"I was engaging in copulation the night previously, when my dearest partner of my non-marital relationship released an expulsion of air, a Flatus Vaginalis my dear boy, from her Vulva."