Scribbling

One of my students didn't work at all during journal time today so I said he needed to write during playtime at the end of the day (he'd already spit at someone earlier in the day, so he lost his playtime anyway).

During playtime: 

Student: I can't write anything.

Me: Yes you can, do your best.

Student: But I can't. 

Me: Why can't you?

Student: I accidentally scribbled all over the page with my journal marker.

Me: That's not an accident. You did it on purpose.

Student: But I still can't write because I might accidentally scribble again.