left: Emil Tinkle, "the Wurttemberg Slasher", with his NSU built Fokker DVII. Note the incontinence pouch fixed to the outside of the cockpit. The tiled fuselage pre-dates the concept of ceramic armour by several decades but must have had a detremental effect on performance. Tinkle felt that constantly having to stay downwind in formation limited his tactical flexibility and preferred to fly alone, a preference which his comrades were happy to concede. This disadvantage was, however, somewhat offset by his ability to take his own cloud cover with him where ever he went. He is probably best remembered for introducing the term "splash" into air combat.

Postwar Tinkle founded Incontinental Airlines. The Urinus WC-I could carry up to four passengers in commodious luxury. Each passenger was provided with a rubber hose directly connected to the under fuselage septic tank.

In contrast the Caught-Short CS-7 was equipped with individual cubicles for twelve passengers and stalls for an additional three standing. Incontinental went into liquidation in the early seventies.