A protracted happy party in which large quantities of alcohol are consumed. It can also be used while at a bar. Basically, if you're piss-drunk, you've had an alcoholiday.
I'm taking an alcoholiday, or I need an alcoholiday.
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!!!"
