When you remember code from last night in the middle of your day and you know exactly where you fucked up.

Or realizing in the middle of the night that you forgot to include a feature / component in a project which you already submitted...

@vzhivkov When a bug was fucking you up the whole day and then you find the problem while you are sleeping and you wake up from your bed in the middle of the night shouting "THERE YOU ARE YOU SON OF A CAT", and then you turn around and start sleeping again

@devcexx lmfao ikr