I never thought about it till I walked around my house. After I got up from sleeping 11 hours straight, I went downstairs, made myself some breakfast, and while I was doing it I have a tendency to singing. But the song was a Metallica song, I can't remember what the name, but the lyrics go "Where do I take this pain of mine.", (which there's nothing to the reason I sang that song, it was just random lol).

But when I sang the song my vocal tone was like really low, which I thought was like damn it's sexy lol.