they are different brands/types of rootbeer....but seriously the reason i've been drining mountain dew is because i sent my locker full of coke picture to the coca-cola company and they were like wow we are impressed, thanks for supporting coke, by the way where do you keep your books, you know what we will send you sometin.....two weeks later i got a sticker one lousy sticker

thats why im drinkin mountain dew