this is so weird haha i really want to know now! and about oz's guitar case, lots of bands including local ones have stickers of other bands on their cases, from what ive observed, so it might be the band :) perhaps, one of the set decorators knew someone in the band? hehe

I saw the WP sticker about 3 or 4 times in the Buffy episode where Xander become's a babe magnet to all the female population except Cordelia, when Amy's spell goes wrong. I was looking hard today, lol. Saw some other stickers to, like Lit, All and Lotion. Put from that episode, you can see many different stickers on those lockers, lol.

I spottd another WP in "This Year's Girl" behind Faith when Buffy and Willow first see her on campus looking at the bulletin board.

I noticed this a while ago but never thought to much about it. It might be a band.