A great time or an event that is done whilst under the influence of weed. Or plainly just the time you smoked some Mary Jane.
Robbie, George and I had an extravaganja last night! We smoked two Henry's and now can't find George!
by callumcookie November 15, 2014
Get the Extravaganjamug. by Pete Larson September 30, 2006
Get the Extravaganjamug. "yo, i didn't see you at my party yesterday." "well, exams are tomorrow, and it was a total extravaganja, so i wanted to be focused and stuff." "true dat."
by Spencer Rapson March 2, 2008
Get the Extravaganjamug.