not sure if troll...
but, wtf is that in the first place?
it this part of the digestive tract that prolapsed? then why aren't there openings on both
ends? is this a mutated tumour that "came" off? is this some weird ass parasite?
if you are not a troll, go to the vet, show him/her this thing, make your inquiries as to wtf that is.
come back and tell us.