I'd live on Watermelon if I could afford it but in the UK good ones are hard to find and the ones available are expensive. I was brought up in Georgia where you could pick them up for a few dollars most anywhere. Almost makes me wish I could move back. Almost but not quite!
Apparently the trick with melons is not to mix it with other foods of any type as it passes through the system PDQ. If it gets stuck behind a slower moving food, it will ferment raising your toxicity.
If it was me, I'd certainly eat the Watermelon especially if that's what I was hungering for.