Top definition
Similar to a turtle head, a boat knob is a small piece of poo, that has emerged from the anus, while the rest of said poo is still submerged inside the rectum.
Bogan 1: Oi where's the dunny cunt I got a boat knob hangin out.
Bogan 2: Down the hall and to the right you filthy cunt.
by Crumbed Cutlets March 31, 2016
Get the mug
Get a boat knob mug for your dog Trump.
2
"Hey Reece Nichols people say you have a boat knob"

"Oh fuck she said she liked it :("
by Hazertron12 March 29, 2016
Get the mug
Get a boat knob mug for your mate Gรผnter.