The old plumbers use to carry them on their backs .. Nutters ..( maybe that's an old wives tale ... and they all have old wives...oops)
Yes.. Take a good club hammer .. Put some ear muffs on ..close the door... And start breaking it from the overflow all the way down the centre till it breaks in half.. Then into quarters .. Wear builders gloves and be careful.. Very sharp and jagged pieces occur.. Good luck... Oh .. Put something in to stop crap going into your waste pipe ..and be careful of your water feeds, not to damage them!