The term 'classic Fringe' could have been invented for the work of Róisín O'Mahony and Chiara Goldsmith. All seriousness must be left outside the room as this pair go through a series of sketches and audience interactions that forego any meaning and offer nothing more or less than a momentary flash of nonsense in all our terribly sensible lives.

With Junior Senior bouncing over the sound system, the pair gleefully chuck mushrooms and marshmallows about the place and plant plastic sunglasses on some lucky folks' heads. The delirium rarely lets up over the course of 50 minutes as Róisín & Chiara throw all cautions to every wind and come up with the daft goods. So, we meet a green-eyed wolf who bemoans the death of dial-up internet, touchy-feely Glasto-goers, and there are enjoyable nods to both The Matrix's red pill and the Police's red light, care of 'Roxanne' (or is it Róisín?).

You might not learn too much about the pair here, though they insist that they have switched national stereotypes with Irish Catholic Róisín being the passionate one, while Italian Chiara is severely repressed. A mad show full of crazy things, with bemused laughter acting as the perfect soundtrack.

Heroes @ Boteco, until 26 Aug (not 15, 22), 2.40pm, £5 in advance or donations at the venue.