It starts in Volume 6 Chapter 57. Read and review!

Zaku Got ran Over by Ms. Forehead

Zaku got run over by Ms. Forehead.
Walking there from our bush fourth day eve.
You can say there's no such thing as pink-hairs,
but as for me and Dosu we believe.
He'd been closing too much missions,
and we begged him not to go.
But he forgot his education, and he
sprinted out the bush into the tree.
When we found him fourth day morning,
at the scene of the attack,
he had O blood type on his forehead,
and incriminating knife marks on his back.

Now we're all so proud of Dosu,
He's been taking this all so well.
See him in there watching the fight,
doing nothing and
playing cards with Kin and her bell.
It's not that bad without Zaku,
All the teammate's dressed like wack
and we just can't help but wonder:
Should we open up his journal,
or burn it black?
Burn it black!

Now the scrolls are in the pouch thing
and the kunais tastes of blood
and the pink and shiny earings
that would just have matched
the hair now covered with mud.
I've warned my only
sensei and master
better watch out for yourselves,
they should never give a headband
to a girl who has big foreheads
and reads from bookshelves.