Kristen Bell might have expected this from Nickelodeon, but PBS??
On a recent trip to Sesame Street, the Hit & Run star found out that all the world's a stain when she tried to teach kids the word splatter!
Oh well! That's what you get when you ask for help from Elmo and Abby!
For now, ch-ch-check out the bonus video AFTER THE JUMP to see Kristen's hunky hubby Dax Shepard grab his guitar and get amplified!