I'm a dirty boy

On several occasions at school, I witnessed the dirty boy in action. So much dirt, so little time.

Here is pretty standard dirt play, digging tunnels:

But his true passion is apparently just dirt.  He kicks it. 

 He dives through it.

He scoops it up and tosses it in a cloud.

I even saw him dump a few handfuls directly on his head.
Does anyone own stock in a laundry detergent company?