'I just went past the hairdresser's,' says Cass. 'They're offering a Brazilian blowdry. Surely there's nothing left to dry if you have a Brazilian.'
'I wonder what a Brazilian blowdry is, then?' I ask. 'I'll look it up online.'
'No, don't do that!' urges Cass. 'You'll be bombarded with emails trying to sell you Brazilian blowdries. I'm for ever being offered downstairs cloakroom double sinks with an overflow and a swivel tap.'
'Is that a euphemism for someone in need of a Brazilian?' I ask.