While going swimming in flooded limestone mines as kids, we would hold on to large stones (a brick would fulfill the same purpose) and see how far we could sink down before letting go and coming back up to relieve the pressure and get our heads back up over the water to breathe.
I think this is one of the most brilliant metaphors I've ever heard in a song.
Hypothesis of the brick:
While going swimming in flooded limestone mines as kids, we would hold on to large stones (a brick would fulfill the same purpose) and see how far we could sink down before letting go and coming back up to relieve the pressure and get our heads back up over the water to breathe.
I think this is one of the most brilliant metaphors I've ever heard in a song.