Brooklyn 99 depression is a complete sadness you feel when you have just finished Brooklyn 99. This type of sadness lingers for a few months and you never truly get over it. Brooklyn 99 depression (aka b9d) is very common in watchers of the series and once you have it - there is no going back. You will cry in your room for hours and nothing will ever make you happy again.
super fan:

i am so depressed, nothing is making me happy ever since i finished brooklyn 99

another person who has finished brooklyn 99:
Oh man! you definitely have brooklyn 99 depression
by Brooklyn 99 no.1 fan September 05, 2019
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