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1.
What you call your penis after dirty butt secks.
I was giving it to this skank butt good then I pulled out and had a fecis.
by xxLexXX May 20, 2009
 
2.
(fess-iss) Like feces but better. a more extreme version of the word feces, used to describe in a superlative manner. Used figuratively to describe extreme filth or other negative conotation. 2. Often used to describe the excrement of a zebra (zeb-ra) not (zeeb-ra).
My word! That zebra is covered in that other zebra's fecis!

Clean up your junk. I'm tired of living in your fecis.
by Little A July 19, 2006