1 definition by Psychedelic Maniac

1

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

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• © 1999-2021 Urban Dictionary ® • advertise • terms of service • privacy • dmca • bug report • help • blog • data subject request