Ah, the passive-aggressive note – preferred language of millions of disgruntled, peeved and all-round dickish housemates the world over.
There truly is a very special art to nailing down these notes – and so we've had a snoop around, like a nosey flatmate 'looking for a phone charger' inside your room while you're back at your folks' house, to pull together some of the best.
These 13 housemates... they really know how to do it.
1. This housemate who values honesty
2. This housemate who knows that if you can't win with reason, win with grammar
3. This housemate who takes the J Walter Weatherman approach to lesson-teaching