The boy might be zoned out because he's bored with what he's supposed to be doing at the desk. Maybe the subject matter isn't interesting to him, or he's simply in a mood where he can't focus.
He might be drawing or doing his homework.
He could be writing a letter or working on a school project. Maybe he's just daydreaming while sitting there.
The cartoon boy in the desk might be studying or daydreaming. It really depends on the context of the cartoon.
The cartoon boy student could be moving the desk to a different place or trying to fix something on it. It's hard to say for sure without more context.
The boy might be looking tired or perhaps feeling unmotivated while sitting at the desk.
The scene could show a focused boy sitting at a neatly organized desk, with papers and pencils around him, and maybe a lamp providing light.
It could be a scene of the boy studying hard with books and stationery on the desk.
It could be a scene of the boy concentrating on his homework or drawing something.
It could be a scene where the nerdy boy is daydreaming while looking at something on the desk. Or perhaps he's nervously fidgeting with stuff because of a difficult assignment.