Uncle Fred in the Springtime by P.G. Wodehouse Paperback Book 9780099513841

Or as he crisply puts it There are no limits literally none to what I can achieve in the springtimeEven so his gifts are stretched to the limit when he is urged by Lord Emsworth to save his prize pig the Empress of Blandings from the enforced slimming cure of the haughty Duke of Dunstable