Oxford Dictionary Definition's definitions

muthead

A wranger that is known to pass out through the inhalation of nitrous oxide (commonly known as nangs) and fall, smashing their head on the table repeatedly and causing personal damage.

A muthead is also a well known receiver of the filthy ronald and the red dragon/white dragon.

Muthead had a nang and slammed his head on the table, fucking up his head.

by Oxford Dictionary Definition June 21, 2004