Nappy Flapper

A person with a sail boat or sailing a boat usually very slowly, often in your way and otherwise causing chaos and mayhem, is often referred to, preferably with great gusto so as to ensure the highly skilled veteran of the sea is aware of your acknowledgement of thier prowess a #@$#@ HAPPY FLAPPER!

Begora Gregory would you get a load of that drunken Nappy Flapper off the starboard quarter!