Just as a disclaimer, I'm all about hugs not drugs, but this is the only day I feel comfortable singing Afroman as loud as I can from my car window.
Here's your 4/20 playlist, though I suggest just going for a straight soundtrack of Bob Marley or Sublime.
Afroman - Because I Got High
Snoop Dogg & Wiz Khalifa - Young, Wild and Free ft. Bruno Mars
Kid Cudi - Marijuana
Dr. Dre - The Next Episode ft. Snoop Dogg, Kurupt, Nate Dogg
Sublime - Smoke Two Joints
Three 6 Mafia - Stay Fly
Rick James - Mary Jane