Strange Masks for Teenage Party 200512

Guess what? I was assigned on 20 May 2012  to draw 25 strange masks for a teenage party and they specifically want their own uncanny drawings with weird expressions. Till today, I cannot figure what it meant when the organiser told me that the youth will donned this mask after teasing their friend. Queer…as it reminds me of the doomsday cult japanese movie called “21st Century”. Anyone can tell me what does these masks represent?