Douche Liner
When the douchecanoe is no longer big enough to hold the amount of douchery that the douchebag exudes, said douche needs a larger boat, (a large ocean-going vessel) to carry the douchedom to other parts of the world. The douche-o-liner makes stops at doucheport, the isle of douche, the kingdom of douche, douchebag strait, and many other douchey ports-of-call.
My ex is the Captain of the S.S. Douche Liner, it's nothing but drama and trouble with him.