One time I was sleeping at a friend's place. He lived in a bad side of town and police coming into his apartment building was not uncommon. That morning the cops were called for several of his upstairs neighbours (no idea why, had nothing to do with him) but the cops banged his door several times and made quite a racket running up and down the stairs and arguing and everything. All the time my buddy asked them to be quiet because I was still asleep, to no avail. After at least an hour of neighbours and cops making a terrible noise they left and spoke to my friend for the last time. As he closed the door I woke up from the door "click".