Bathtub Echo Chamber

I SLIPPED BACK INDOORS OUT OF THE NIGHT CHILL AND DOVE HEAD-FIRST INTO THE GIANT WHITE PORCELAIN BATHTUB! CLATTER-THUMP! THE BOTTOM WAS AS SLICK AS ICE AND FREEZING COLD AGAINST MY FEET! I CROUCHED DOWN FLAT, CUPPED BOTH HANDS RIGHT OVER THE SHINY CHROME DRAIN, AND LET OUT A LOW, ROUMBLING BELLOW! BOOOOO-WAAAAAAAGHH! THE SMOOTH CURVED WALLS CAUGHT THE SOUND AND WHIPPED IT ROUND AND ROUND IN A CIRCLE! THE ENTIRE TUB VIBRATED THROUGH MY KNEES! IT WAS LIKE SHOUTING INSIDE A FROZEN CLOUD!