'Do you sell leather cleaner here?'
'Sorry, we only sell leather and suede protector here. '
The stupid customer takes a moment to think...
'Sorry, does that protector work on leather?'
'Yes, it's for leather and suede.'
'I need it for leather.'
'Yes, that's what I said.'
'You said suede though.'
'Yes. Leather and suede are actually the same thing, just a different finish.'
'Oh. Okay. I don't want that.'