Endou and Tenma is fighting over something...

And no, not sakka!

Endou: What did I told you not to?!

Tenma: Not to eat rocks!

Endou: And what the <censored> did you just do?!

Tenma: I ATE ROCKS!

Endou: AND YOU STILL SHOUT AT ME.

Tenma: Rocks are edible, dad!

Endou: Rocks AREN'T edible, Tenma! That's it, go to your room, right now! No texting Kyousuke, No sakka and No- *snatches Tenma's phone* Phone. You're grounded until you get over your rock fetish.

--One hour later--

Tenma: I'm gonna go to the bathroom, I'm not gonna- o.O

Kazemaru: *on the living room, eating chocolate rocks* you should've said sorry to your father instead-

Tenma: OH LOOK WHO I GOT IT FROM-