1. a headache of children downstairs seeded by KerriSackville Like

  2. a headache of humans seeded by boofreddy Like

  3. a headache of spreadsheets seeded by martgro Like

  4. a headache of babies seeded by travellednews Like

Does headache strike you as being more suitable as a collective noun for something else? Then Tweet it!

You should follow @collectivenouns on Twitter here.