Halloween Jack - O - Lantern Frosties

Yield:	1 Servings
Categories:	Halloween, Beverages

4		Navel oranges; (4 to 6)
1		CONTAINER (8 Oz.) vanilla or plain yogurt
		Icing tubes; several colors
		Decorations*
		Serrated knife
		Grapefruit spoon
		Blender
		Straws