A person that is a homosexual loser with no friends. (super dooper gay)
Dude, look, that guy is such a dillner!
A peice of annoying retarded shit that nobody likes and is going to be alone for the rest of his life bacause he is so anti-social.
Dude, that kid over there is a such a dillner, he will never EVER get any.
Dude, that guy over there, his name is jon, but dont go too close, hes a dillner.