You don’t have to look very hard to find definitions of quality. Some of them aren’t very good (boom! boom!) and one with a lot of currency runs along these lines: 

Quality is value to some person (who matters)

in this case quoted from James Bach’s Rapid Software Testing slides. 
Here’s the price ticket for toilet roll I saw in the supermarket this morning. It adds a new dimension to the phrase spending a penny
Is there a quality issue here? I’m not sure whether I matter much to Tesco and it’s arguable whether any value was lost by the use of this unfortunate abbreviation – I still bought some toilet paper – but if your customers are laughing at you rather than with you, there’s probably a quality issue somewhere.

Image: winnond /