Carlos Mencia really stinks -- in fact, the comic tells TMZ he's completely undefeated in the cut-throat world of competitive farting.
After a comedy show in L.A. last night -- the gas master showed us a new iPhone app called "Fart Battles" -- in which flatulent fighters wage war by recording their own ass-music ... and then sending it to each other.
Fart war is hell .... especially after burrito night.
The Undisputed Champ
... of Farts
10/6/2010 2:00 PM PDT BY TMZ STAFF
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