1. 'Tiny balloons filled with mashed potatoes': what is synaesthesia, and what has it got to do with creativity and metaphor?; 2. 'Those cookies tasted of regret…:' how we investigated evaluative descriptions of sensory experiences; 3. …and rotting flesh: how do synaesthetes and non-synaesthetes evaluate sensory experiences? What we found…; 4. 'Yeurgh…': How we investigated synaesthetes' and non-synaesthetes' responses to emotion words and emotive expressions, and what we found; 5. 'I don't like looking at numbers with no discernible pattern': Conclusion.