"Sesame Steet" appears to be trading in the alphabet for the adult set.

On the heels of PBS' announcement that it would be pulling Katy Perry's cleavage-heavy "Hot N Cold" duet with Elmo from the 41st season, the series has released another adult oriented clip.In "True Mud," the show riffs off "True Blood," HBO's hyper sexual vampire series starring Anna Paquin and Stephen Moyer.

After opening with a song virtually identical to the opening track of the HBO show, an orange muppet with a coif like Bill Compton's enters a diner and asks a Sookie-stye waitress with blond hair for some True Mud.

"He must be one of them grouches! Grouches love mud!" some nearby patrons cry, imitating the townsfolk in "True Blood's" first season who gasped at Bill Compton's arrival in an otherwise human bar.

Muppet Sookie brings out some True Spud, by accident, and gives the young viewers a little rhyming lesson.

In the end, the customer jumps into a giant bath of mud.