The Worbel Fly IS a parasite.
It enters it's host through the foot, chews out it's throat, bores through it's backbone then emerges through a hole in it's back.
(
Anal_Volley_Net,
Thu 10 Dec 2009, 1:35,
archived)
Ah cheers mate
Probably not your type though.
(
Anal_Volley_Net,
Thu 10 Dec 2009, 1:51,
archived)