What takes place in mosh pits at Kendrick Lamar concerts?

I understand everything except for the 3rd turd

Peter help me

what

Who and what?

Petah please explain me

Asked my electrical engineering student housemate what this means and he made it even more difficult to understand. I'm a biologer student idk electricity. peeder help.

Petah what’s the word to the wise here?

Peter?

I've searched it up but only found how to shower properly as a Jew.

Did the dad crank one out on his head?