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1) to go to a Mcdonalds and purchase drugs (in most cases marijuana)

2) to go to mcdonalds for the purpose of buying a mcburger but blazing before so the food is much more enjoyable

3) to use mcdonalds washrooms to roll copious amounts of marijuana into small little spliffs
dude need weed nobodies round

get a McSpliff there always a guy munching out at mcdonalds
by ANON-EH-MOUS February 16, 2010