A crusty, sticky, smelly, week-old piece of poop that is either lodged in ones bunghole or stuck in ones
chonies and is currently
rotting away in the bottom of your hamper.
A contraction of the words Butt/Bunghole + Fungus =
Bungus
"I think you have some
Bungus on your face, Todd"
"Hey man, can you give me a hand...
errr...a finger, with this
bungus? It's a real fighter!"
"Yup, I can wear these
boxers again, they only have a bit of bungus on them....and...it's pretty fresh anyways."