I suppose it depends on what the contents is...
If the contents are just air, hell yeah!
I think the intent is the contents of a used diaper. But perhaps it is better if the contents are unknown at the time of the choice. Maybe it is indeed empty. Or maybe not. Once you agree, you're committed.
Where should this comment appear?
This pairing only
Whenever "Eat the contents of a diaper" appears
Whenever "Eat lunch at your desk" appears