Silly people failing to be frickin sweet by painting fluroescent coloured stripes on their face, normally in a tribal style. They are normally done for parties and done in neon paint (normally in the colours of the neon spectrum. Or highlighters if they're super DIY.
Miley: Yoh! Like my super indie rave girl 2k9 rave stripes?
Matt: You look like a completely fake douchebag, go die, miserably.