Whining about how much your life "sucks" even though you live in the richest nation in the world and are a pampered little while boy/girl. Usually teenagers desplay this quality of "No one loves me or understands me". Angsty teens often try to 'commit suicide' but are really just trying to get attention.
Me-Nick is such an angsty little bitch!
Friend-I know! I wish he'd get over himself!
Nick-I'm not angsty! You just don't understand me! No one understands me! I want to die...