A knob knuckle is the term used for accidentally grabbing a testicle during the act of male masturbation, then yanking it swiftly up into the centre of an erect penis, giving a knee cap, or knuckle type appearance in the centre of the shaft.
- To knob knuckle someone is to cause them pain through some form of passive aggressive behaviour, often resulting in some subtle yet severe psychological trauma.
- To be a knob knuckle is to perform activities in a careless fashion, not paying full attention to the task in hand.
Aaargh, you've given me a knob knuckle you clumsy...
Get on with it, you great knob knuckle.
A person that is so stupid and does everything wrong.
That knuckle knob Dave fixed that roof and it's still leaking.
A person that is so stupid that everything they do in life is a stupid move.
That knuckle knob Dave fixed that roof and now it's leaking again.