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1.
It is a transitional condition in which a civilized male goes through to become a meathead.

Meatheadosis is caused by a sudden spike in testosterone levels inside the body. However, this increase in testosterone often does not reach the required threshold to initiate Meatheadosis. The threshold varies from individual to individual and depends on height, mass and age.
Joe began to show signs of aggressiveness after watching UFC. It was found that JOE's testosterone was higher than normal. Joe was then diagnosed to have Meatheadosis. After 10 days, JOE began going to gym and even got a loan and bought a truck to show off how much of a man he is.
by Meatheadpsychologist April 10, 2011