I don't think it's lying, I think it's getting the lower-calorie product where it's good enough, but there simply aren't good low-calorie fries.

"I'mma have a soda. Coke and Coke Zero have equal flavor value for me. Might as well get the Coke Zero."

"I'mma have a side dish. Kale and Fries do not have equal flavor value for me. I'll get the fries."