Came from a band named Achoowawa. 'Emo' kids say that you can't surf and be emo, and it just happens the lead drums, lead singers, and lead guitarists of Achoowawa do surf, so the 's' was added in front of emo.
2.only having "emo" hair but not the mannerism
3.only having "emo" mannerism but not the style.
ex 2; your so semo with that hair and all.
ex 3; that semo kid cuts himself..but he hangs with those preppy/gangsta kids..so he`s not really emo.