Top Definition
Bring Your Own Intoxicants.
Like BYOB, but when more than just booze is involved.
Psytrance party on Saturday. BYOI
by Psychedelic Maniac October 10, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×