Hammertime...

[Matchstick556 12]

WTF? I'm assuming a hack, but what makes it happen?

In case you didn't know, a message appears on your screen that says, "Stop. Hammer time."

Then your character dances like a chicken.

However, I will say that is probably the best dancing I've ever done in my life.

[SollemNRomanHD 10]

Stop, hammertime. Toooodoodoodo Todo Todo, Toooodoodoodo Todo Todo.

[M O N S T E R 599]

Scripter. Happens to many people.

-MONSTER

[Matchstick556 12]

Scripter. Happens to many people.

-MONSTER

Is it random, when they're near, etc?

[Mays (DayZ) 154]

If it's hackers, it's bad.. but that sounds so awesome.

[Gogster (DayZ) 626]

Tell the server admin - they can ban the script invoker.