DoryMan with a good point/link, some needful reading, and 39 minutes well spent...
This is kinda cool. How to tie eight knots on a coffee cup.
So expensive in fact, that I won't bother with a link because it's just embarrassing what folks who should know better will spend on things of a nautical nature. Plus anyone dumb enough to spend that kind of money for a cheap cup with a bit of string just might wind up hanging themselves while trying to do a sheet bend or drowning in their morning coffee.
Listening to Phosphorescent
So it goes...