fat head syndrome 

when a person(s) gets an extremely large ego.

An example is a person who thinks their $hit doesn't smell.

fat head syndrome by BettY SpAghetti June 3, 2003

fat head syndrome 

gay monkeys eat ass

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fat head syndrome by Jeff K June 2, 2003

Fathead Syndrome

When a person loses weight, but still see's themselves as larger and bigger than they truly are.

Jane stepped in front of the mirror and saw her reflection. She saw what she always did; an obese human being. While on the other side of the mirror, she was opposite of what she saw. Her doctor had explained to her after her weightloss that she may experience Fathead Syndrome.

Fathead Syndrome by Noellie July 29, 2011