A person(usually and hopefully male) that frequents affliction or hollister stores and local GNC's looking for the latest muscle gainer. Known mostly for their quick temper and lack of coordination while participating in sports other than weight lifting. Meat Heads usually peak in popularity in high school and start declining after sophomore year in college due to either the over capacity of meatheads at the school or he is just a dousche bag. Overall the lives of meatheads are failures due to the fact they're never satisfied with their size.
Dude, lets go to the UND GNC or the mall and buy affliction shirts.
To undermine someone’s intelligence in front of others. A moss head will be a passive person and not react to insult allowing the joke to be taken further. Hard of hearing or being confused by a punch line often missing the importance behind a story a moss head can be found in most groups of friends.
An editor of the Urban Dictionary who refuses, for whatever reasons real or imagined, to post your definition of a word; thereby denying you the momentary thrill of validation you would otherwise receive.
"Hey have they posted your definition of 'Gutter Folk' yet?"
"No, it got held up in committee by a bunch of Urban Dic-heads."