After an unnecessarily lengthy preamble that includes a lesson in cultural and linguistic differences and enforced sexual fantasising for the audience, Australian Jonno Katz weaves a love story of a man, another version of himself, an enigma wrapped in a half-baked metaphor wrapped in a girl, and a mosquito that may or may not represent Cupid’s pointy little arrow. Katz exudes a kind of irresistible manic energy and like some kind of lithe, leaping jester has no problem keeping a giggly crowd’s attention for a full hour with just himself and a lot of imaginary friends. When he admits he talks funny we think he’s referring to the accent, but his speech is also punctuated with highly-strung hoots of nervous energy.

At his best he’s snapping in and out of different characters, adapting voice and body language to inhabit various crudely drawn but instantly recognisable personae. And while the whole thing could have had a little more focus, it’s great to see some hilarious improvised riffing on a crowd’s unsolicited input.

Assembly Rooms, 623 3030, until 29 Aug (not 16, 23), 6.50pm, £11–£12 (£10–£11).