A viral photo showing the inside of a rock that undeniably resembles Cookie Monster from "Sesame Street."
The rock was also tweeted Saturday by Dr. Jacqueline Antonovich, historian of medicine, gender and politics and assistant professor at Pennsylvania's Muhlenberg College. The photo was retweeted 83,000 times.
I’m very mad at myself for forgetting to do an image description," Antonovich wrote. "This image depicts a cross-section of a geode that resembles Cookie Monster."
On the outside, the rock appears pretty ordinary. On the inside it's screaming, "Om Nom Nom Nom."