meaning of "rolling one's eyes"

[learning_english]

All of those might possibly be said while rolling your eyes about the other guy's seemingly endless and ridiculous worries.

Could you explain me the "rolling eyes"?
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Please let me know if I have made any mistakes in any of my sentences.

[Mister Micawber]

.
An expression of dismay or exasperation: actually or metaphorically moving one's eyes to follow along an imaginary line of vision through the extreme range of the eyeball on the periphery of vision above the horizontal, from right to left or left to right.
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Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber