Neighbor smoking weed in public - What to do?

[davsel]

Wait till the next time he and his friends are good and stoned in the car.
You and a couple of buddies dress up in some surplus combat gear.
Bust them in the act with guns drawn.
Zip-tie and hood him and his buddies.
Transport them out East to some isolated field and turn them loose. Nekid.

They will have a good story to tell, and your neighborhood will be safe again.

Or this: