Little Hawk,

come down from the more transcendental aspects of this world for this joke (grin). Though 'Wuerstchen' could have more meanings, it doesn't matter here. The joke is based purely upon the physical aspects of a typical medium sized Gwerman Wuerstchen:

It is red, about 6 inches long (which is never long enough), mostly comes with a slight curvature, its outside is a bit wet and slippery, it has a difficult to describe taste which some people do find repulsive,... I think there's no need to go on.

Wolfgang