people who do this normaly look like Justin Bieber , i mean soft hair and white skin , very rarely dark skin people do this type of shits , they are called Emo , which means too emotional and they enjoy vampire movies like twilight , also love to color their eye brows in black or dark colors
emo people are mostly bullied because they look and behave too innocent not because they look bad , actually most of them look much better than normal people , kinda the look where you feel wow she looks so sweet/kinda evil and lonely i wish she was my girl , but in reallity they are fuckedup they do shits others wont even imagine like cutting self , mostly this happens because of bad childhood incidents like torturing of parents or a sudden loss of a loved one , if you see a emo person they wont care to smile , say hi etc but from inside they badly wanna get laid with you lol , i think only way to get in to them is by talking about rock bands or emo music and then be friends and share some cds lol act like you love them too , after getting to know them a lil bit start advising them like you care which they really like , finally :p enjoy some emo sex lol