Curren$y Wiz's Wedding Was a Sticky Icky Situation

8/23/2013 12:02 AM PDT

Wiz Khalifa's pal Curren$y was fully on the guest list for his recent wedding ... and the rapper fully intended to be there for Wiz and Amber Rose -- but then something came up.

Like a lighter ... and some weed. Ok, a lot of weed.