I'm afraid I can't have that. [He doesn't want that. He's disappointed his brother too much already.] I won't let you down.
[...which meant he should probably get started on this soon, or his brother will think he hasn't been doing anything. Sigh. He stands up straight, stretching his arms.]
Fixing that thing up can't be all you're doing today.
[action]
[...which meant he should probably get started on this soon, or his brother will think he hasn't been doing anything. Sigh. He stands up straight, stretching his arms.]
Fixing that thing up can't be all you're doing today.