Living with other people is always going to lead to arguments.
But these pictures capture some of the very worst examples of bad roommate behaviour.
From eating someone else's food to leaving dirty dishes in the sink, many of these snarky notes were left by people who were fed up with others' bad habits.
Others were put up by flatmates who were too lazy to finish a job like change a lightbulb or fix a switch.
Some of the messages received equally prickly responses from flatmates unimpressed at being told what to do.
FEMAIL shares some of the best examples...
This roommate had a quick response for this hungry and angry roommate.
Seeing in the dark seemed like an easier fix for this lazy flatmate.
This note should have led to better kitchen habits - but has proven unsuccessful.
This roommate found a light-hearted way to make a point about the dishes.
Ryan did not seem overly confident in Paul's ability to look after the cat.
This bold thief was not threatened by their roommate's angry message.
This greedy drinker went out of thier way to keep all of their Diet Cokes.
The air conditioner proved a source of contention for these feuding flatmates.
Rather than replace the toilet roll, this roommate took the time to write a note.
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