Have you ever seen those videos where people will dress up like shrubbery and then jump out and scare people walking by? They're actually pretty funny. Here's an example:
I could watch that all day. It's just pure, harmless fun.
Apparently one of these guys got in some trouble, or maybe wasn't being as cute as Mr. Bushman there above because someone filmed this video of a police officer having an argument with a shrub-person. The police officer looks pretty confused.