20. When You Smell Weed On Someone In Public

The problem is when someone else gives you that expression, and you know you evidently reek. Where's the Febreze?!
19. When You're Sharing A Joint And Someone Slobbers All Over It

What were you doing with that blunt, man? There's more drool on it than a bloodhound's chew toy. Gross.
18. Logging Into Facebook After A Smoke

Or, you know, not.
17. Going On Holiday To A Place Where You Have No Weed Connections

When you run out of weed and you're not amongst your usual circle, you're gonna have a bad time. Shall we just, like, go home already?