Tea - it's not rocket science

Whenever Skippy or Ermentrude make each other a cup of tea, they always have a long discussion about the strength of the brew, and whether it measures up to the recipient's expectations. I could understand this if they were variable in their tastes in any way, but they're not. The tea is always determined to be 'Fiiiiiine' (with the most nasal of long, drawn-out Northern vowels it is possible to produce).