In addition to the existing definition.
After a session of truly inspired anal coitus with an Amsterdam whore, to use ones poo soiled member to "sketch" a reproduction of a famous Rembrant or Vermeer of art on her back.
I was halfway through drawing a Dutch Master when I had to go back in for paint for my dick.
A dutch master is primary used to roll gods greatest gift into a beautiful work of art.
Max bought a "Dutch Master" to roll the B-L-U-N-T