Today I kept hearing a noise coming from what sounded like the BB on my way home.

Since I know "BB" noises usually aren't the BB I check pedals ,chainring bolts, tightened my cog and lock ring and figured out the noise was a loose seatpost bolt, it was odd because it was just loose enough to not move but loose enough to be annoying.

Its just further proof that you can't hear where a click is coming from sitting ontop of a bike going 15 or so mph