The pink-colored, Peeps-flavored Oreos landed on shelves just a couple weeks ago, and already people are claiming the cookies are dying their excretions pink.

First came reports that the pink cream was changing the color of eaters saliva and tongues. The effect seems to last throughout the night.

Spit isn't the only thing changing color. Some people are finding a pink surprise in their toilets after eating the Oreos. No word if the amount of cookies determines how bad the dye job is.

Read more at Buzzfeed.