Usually assumes the form of an insecure wannabe
badass with a chip on the shoulder the size of a buick, and an IQ number less than their shoe size. Your average knellerhead can usually be found trolling
internet bodybuilding forums under multiple psuedonyms... but can also be described as an overzealous, pompous, or vexatious asshole that most
people wish were killed with a Mortal Kombat fatality.
The knellerheads are at it again - when will they learn that we can
see their IP addresses, they're not in China, and they've got
five screen names?