Final answer:
The phrase 'feast for the eyes' is a figurative expression indicating that the balloon fiesta is visually stunning or impressive, just like a feast is for your taste buds. It suggests a great pleasure or entertainment for your sight.
Step-by-step explanation:
When someone mentions that the balloon fiesta is a 'feast for the eyes', they are using a figurative expression. This phrase usually means that the event or thing being referred to is visually stunning or impressive. Imagine a sky filled with balloons of different shapes, sizes, and colors during the festival. This sight could be compared to a feast, a table filled with a variety of delicious dishes, but instead of appealing to your sense of taste, the balloon fiesta appeals to your sense of sight. Hence, it can be termed as a 'feast for the eyes'.
Learn more about Figurative Expressions