(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).
The act of smelling or noticing a person deficating, and seeing their poopy and getting a colossal erection. This can also be used when your having sexual intercourse with a persons fecies.
Example: CJ says :"Do you smell that? I think someones shitting."
Matt says: " Yea yo, i think im getting a Fecies Boner. Its starting to rip through my jeans."