Someone who acts like a diluted and weakened penis (idiot).
Ethan was acting like a right "knob shandy" as he was being dictated to by his girlfriend and had no backbone.
A person who acts like a dick whilst jumping around in a flap(mood).
Stop acting like a knob shandy
The string that hangs off the IUD (form of contraception) inside the woman's vagina
Man, I was deep inside this chick last night and I could feel the bareback knob tickler stroking on my cock with each pump
An overly hairy dick, extending all the way to the knob.
Did you see that guy?? Full Hobbit Knob.