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.
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."
Fecies Boner