Part of the male body which is a vagina replacing their anus but still sandwhiched between their bumcheeks and is constantly bleeding, also the male genitals suddenly dissapear from the body and leave's a small silky smooth bald patch where their genitals were
I woke up this morning my bed was drenched in blood, but i didnt realise i had a fannybum until i saw my genitals were gone!
by ToxicXrainbows February 04, 2010
1 more definition
A person who has a fanny as a back bum or a complete and utter fool; to be precise.
Oi you! You wee fannybum suck my dick
by Calumrob May 18, 2011