Combine sugar, butter, water, and salt in a sauce pan. Heat to a boil and then reduce heat to low. Add flour and stir well. Cook over low heat for 2 minutes.
Remove from heat and let cool 10-15 minutes.
Add eggs, one at a time, mixing well between each.
Place prepared dough into a pastry bag or large ziplock fitted with a large star tip. Pipe 3-4 inch sections into oil preheated to 350 degrees. Fry until light golden brown, remove from oil, and toss in cinnamon sugar. Serve immediately.