Should I Still Be Doing This? is a gloriously absurd, laugh-out-loud one-woman show that defies expectations at every turn, even before the whole thing has officially started. Hilarious character-comedian Susan Harrison can confidently say that her new Fringe hour is the only one to feature a small girl  trapped in a well while also inside the stomach of a middle-aged woman. Yes, really. Harrison’s surreal character comedy show is as inventive as it is deliriously funny, weaving together a series of unforgettable personas, from a self-depreciating Sindy doll (Barbie’s lesser-known British counterpart), an Australian contortionist, and a 1990s panda channelling the Gallagher brothers.

With Harrison’s effortless charm, wit and infectious energy, she slips between characters seamlessly, hooking the audience within seconds of each new creation with her flawless delivery. The show’s central question (is it still ok to dress up in bizarre outfits as you get older?) feels both playful and poignant; a witty exploration of aging in the creative world. Ingenious, humorous, interactive and highly unpredictable, Should I Still Be Doing This? is truly unique and packed with more originality than most shows would dare to attempt.

Susan Harrison: Should I Still Be Doing This?, Gilded Balloon Appleton Tower, until 24 August, 7.40pm; main picture: Matt Stronge.