Is it normal to poop undigested watermelon?
Mostly.Normal for most people
Yes, it can be normal to see bits of watermelon in your poop, especially if you ate quickly or didn’t chew it much. Watermelon can also temporarily make stool look reddish, but ongoing red or bloody-looking stool is worth getting checked.
Your gut doesn’t break down every bit of food completely, so recognizable pieces can show up in your poop. Watermelon’s soft flesh usually digests easily, but larger bites or seeds may pass looking much the same as when they went in.
Watermelon can also tint stool pink or reddish for a short time. If the color keeps happening after you’ve stopped eating it, looks like blood, or comes with pain or other concerning symptoms, get it checked.