Oh no! There's a monster in Grover's mirror! Oh wait- Grover is a monster, so that's totally fine! Wubba Wubba Wubba Wubba Woo Woo Woo.

If you're watching videos with your preschooler and would like to do so in a safe, child-friendly environment, please join us at http://www.sesamestreet.org

Sesame Street is a production of Sesame Workshop, a nonprofit educational organization which also produces Pinky Dinky Doo, The Electric Company, and other programs for children around the world.