An upcoming episode of the beloved children's programme will feature a segment based on Anna Paquin and Stephen Moyer's blood-sucking series titled True Mud, which will replace vampires with 'grouches'.

A clip of the skit, which has surfaced online, shows one of the grumpy, trash-loving creatures in Moyer's role of Bill Compton heading to a local bar to buy some 'True Mud' from a puppet based on Paquin's Sookie Stackhouse character.

News of the True Blood parody comes just a day after Sesame Street producers dropped a cameo appearance from singer Katy Perry, following complaints that the pop star looked too sexy in a flesh-flashing mini-dress.