Top Definition
The term used describing the head bobbing motion made by:

1. women giving blowjobs
2. people about to fall asleep
Boy: Did you see Justin in class?
Boy 2: Yea he was being attacked by the hobbly knob goblin.

Boy: Did you hear Karl was going out with Amy?
Boy 2: Yea, shes a hobbly knob goblin, hes so getting laid.
by G. Dickel August 08, 2012
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