Something that looks great on paper, yet falls short when you get the thing up and running.
Named for the UK electronics retailer Maplin who have an amazing ability to accurately spot a trend or niche in the market... and then source a product that almost, but not quite, actually does that.
Sorry about the maplin quality reception, the antenna isn't quite right for this radio.
These buns have failed to rise - did you use maplin quality yeast? - Paul Hollywood probably.
What's that residue in the battery compartment? Did you use maplin quality batteries in there?