The disgusting offspring of the rare creature known as a Mebbit. The word is a combination of "Fetus" and "Mebbit". Fettits are about the size of a Guano-producing Bat and have similar mannerisms. They are typically gray, slimy, and covered in after-birth. Instead of emitting the "MEEEEP!" cry heard from the adult size Mebbit, the Fettit emits a gargly "BLECH!" when attempting to communicate. Instead of learning to crawl and then walk, Fettits instinctually learn to "shamble" immediately upon birth. On rare occasions, Fettits have been trained to carry small explosive vests used in terrorist activity. A Fettit will reach full Mebbit maturity after about 12 years. Highly dangerous.
Pat: Hey John, BLECH!

John: Dude, not funny. You know how sensitive I am about Mebbit jokes after..the incident.

Pat: But "BLECH!" is what a Fettit says, "MEEEEP!" is what a Mebbit says.

John: Come on man!

Fettit: BLECH!!

*BEE BEE BEEP*
(explosion)
by Spritel Keidel December 24, 2009
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