St. Patrick's Day, Halloween, Mardi Gras. Those days that seem to, at least for college students, exist solely for the purpose of getting shit-faced drunk, with rituals often beginning as early as morning and continuing throughout the day.
Bob: Dude! I'm so drunk right now. We started drinking every time we see spongebob squarepants, and they are running a Halloween Marathon.
Ted: Happy Alcoholidays!
An occasion like Hallowe'en, April Fool's, or Father's/Mother's Day. Though not categorized as an official holiday, is often used as a good occasion to get a good drunk on with friends.
" Shit dude! It's Hallowe'en, my favorite alcoholiday! Let's get done up as Zombies and get druuuuunk!!!"
A condition in which one consumes so much alcohol that they end up vomiting it up and therefore do not gain weight (and may in fact lose weight). Furthermore, the day after a night of binge drinking, the alcolimic is unable to consume food due to nasty hangover. See alcorexia.