hypocritical,plastic smiles,filled with stupidity,put on an arrogant front when there is nothing to be arrogant about (eg. talent-less),again stupidity,childish,boring but try to be entertaining,try to be humourous with stupid non-witty uncreative jokes & bad english (you've are late).i think all these are enough to define a loser,a loser.
losers will forever stay in their loser worlds with their loser jokes.