Galloping Trots

The Galloping Trots is a disease known to cause five days of wracking intestinal pain. This vigorous, smelly, and messy affliction is quite common amongst those who pay little care to the cooking and cleanliness of their food. Known in Altdorf as “Rumsters Revenge” after the cheap and dubious “meat” pies sold by Halfling merchants for a penny each, many hungry visitors to the capitol end up “spending a penny twice”. Rest, clean water and plenty of privy rags are the only cure.

Source

 * Warhammer Fantasy RPG 2nd ED -- Core Rules pg. 136