The ceiling fell down

Funny thing just happened this morning at 3 a.m. The ceiling at our rented house suddenly fell down. Strangely, a minute before it's down, my roommate heard some weird voice from the outside. He said "It's like someone laughing". I didn't hear anything, beside a noise from above, that I thought was just some random cat playing up there.

Funny thing, when it's falling down, I was screaming really loud but didn't do anything. My hand was trying to protect my body from getting hit. But it was totally useless. Lucky thing is it didn't hit that bad. But we still had a lot of cleaning chores after that.

The three of us still could make fun of it somehow. While we were cleaning it, we made jokes about it. About the sound, about me who acted weird like I said earlier. And so on.

When I'm writing here, it's still 4 a.m. I still lots of cleaning chores myself, and a mystery to solve: What was going on here?

Or should we keep remain as mystery forever?