Duck, Red Guy and Yellow Guy are among the cheery-looking Muppet-like characters on Don’t Hug Me I’m Scared, a darkly humorous puppet show for adults only Imagine a British Sesame Street loaded with dark humour, surreal twists, existential anguish, psychological horror and buckets of gore. That, in a nutshell, is adult puppet show Don’t Hug Me I’m Scared (Channel 4, 11.05pm & 11.35pm), spun off from a six-part web sketch series that ran between 2011 and 2016 and built up a sizeable following. Entertaining someone for a few minutes at a time is one thing; sustaining the joke for a...