first try:
I THINK THE C IN VITAMIN C MUST STAND FOR "CRACK", BECAUSE I CAN'T GET ENOUGH OF IT!!
second try:
I THINK THE C IN VITAMIN C MUST STAND FOR "ROCK COCAINE", BECAUSE I CAN'T GET ENOUGH OF IT!!
third and fourth:
I THINK THE C IN VITAMIN C MUST STAND FOR "HEROIN", BECAUSE I CAN'T GET ENOUGH OF IT!!
I THINK THE C IN VITAMIN C MUST STAND FOR "MARIJUANA", BECAUSE I CAN'T GET ENOUGH OF IT!!
fifth:
I THINK THE C IN VITAMIN C MUST STAND FOR "CONAN CHRISTOPHER O'BRIEN", BECAUSE I CAN'T GET ENOUGH OF IT!!
I think my favorite option is "CRYSTAL METH," even though it actually does start with a C, because I just like to work it into everything I do.
crack is too popular!

I THINK THE C IN VITAMIN C MUST STAND FOR "CHOCOLATE", BECAUSE I CAN'T GET ENOUGH OF IT!! AAAAAAAAAAACK!!!!!!