Wait. That's pretty much all of them!
Why would you want to poop red grumpies? It allows you to pretend you're bleeding internally. All you have to do is eat one of the following foods, poop some red poop, and then get someone to look at it.
This person will be convinced you're dying. So it'll be the perfect time for you to ask for a favor. Or to borrow money!
BONUS: Beets also turn your pee rusty-red.
WARNING: Frankenberry will actually turn your poop a pinkish-red. So in addition to dying, this will be the one time in your life when you'll have people thinking your poop is cute!
Tarsiers by Salim Al-Harthy,
beets photo from ieatgrass.com,
velvet cake from here,
cereal from here.