Dro Code

similar to "Bro Code", except its rules apply to smoking marijuanna. See also: stoner rules

Text message conversation at 4:20pm:
D:Take a hit!
A:Huh?
D:It's a Dro Code rule, dude. Always take a hit 4:20am/pm if you can.
A:Oh, I didn't notice what time it was...
D:*facepalm*