Very Good, Jeeves, chapter 11, background
Bertie explains why he chose Sir Reginald Witherspoon's Bleaching Court for Christmas: Tuppy Glossop will be there, and he has vowed revenge for the swimming-bath trick at the Drones.
The text is on its way.
Aside, some time before Tuppy bet Bertie he couldn't swing across the Drones swimming-bath, then looped back the last ring and ruined his dress-clothes.