Complex sentence: Rebecca's prudish brother Carl and his flamboyant partner Stuart find and join them in the wardrobe, and they talk about "Stinky John", who Carl and Rebecca once went to school with, and his notoriety for having a repellent body odour.
Split into simpler sentences: Rebecca's prudish brother Carl and his flamboyant partner Stuart find and join them in the wardrobe. They talk about "Stinky John", who Carl and Rebecca once went to school with, and his notoriety for having a repellent body odour.