The two opposing sides, Mainstream and Underground, battle a hidden age long war between each other, some completely unaware of this raging war. Anything an Undergrounder considers to be corporate, or money making becomes Mainstream, and anything a Mainstreamer believes to be odd or extreme becomes Underground.
Originally based loosely on modern contemporary music such as Mainstream Pop vs Underground Alternative etc, it has now spread to anything controversial that appeals towards teenagers and people under the age of 20.
While most Mainstreamers are often clueless of what is actually going around them, and therefore being harmless, many Undergrounders (but not all) are well aware of their own alliance, and because of this, they often abuse situations where a Mainstreamer is seen in an Underground congregation.
Undergrounder Jesse: OMG, OI SHIT HEAD, I EAT JESSICA SIMPSON FOR BREAKFAST YOU FAGGOT!!!
Undergrounder Billy: NICE ONE! NEXT TIME STAB HIM WITH YOUR PIERCINGS!
Undergrounder group: Turn up this slipknot shit!
Mainstreamer Sarah: Wow, um, what was their problem? I knew my new Billabong pink mini skirt would attract attention.. but this is absurd.
Mainstreamer Kelly: Like, totally! It's like we're in the middle of a fucking war!
Undergrounder Matt: Man, Maynard is totally selling out! He used to be cool, but now everyone's listening to three libras!
Mainstreamer Joey: What's new on the chart? By the way, I think I'll wear this pink flanelette to go with my lucky matching faded jeans tonight.
Mainstreamer Sam: Speaking of faded stuff, my skateshoes are naturally fading, time to get some new factory faded ones.