Shell eggs, slice in halves, and remove yolks.
Combine yolks with mayonnaise and mustard and return a spoonful of mixture to the hollow of each egg white.
Make a sail for each boat (egg half ) by stringing a slice of cheese onto a toothpick to make a sail on a mast.
Poke each into an egg half.
This snack will sail into the mouths of your hungry snackers.
Be sure they remove the masts (toothpicks) before eating.