What is the mood of"drowsy eyelids" in a phrase

Acontainer hold 4 gallons of lemonade.a large lemonade contains 16 ounces. how many large lemonades could the restaruant sell before they run out of lemonade?

May someone me with these questions

What is implied in this sentence from mark twain's "the ? 1,000,000 bank-note"? i was puzzled, and wanted to discuss the matter a little further, but they didn't; so i took my leave, feeling hurt and insulted to be made the butt of what was apparently some kind of a practical joke, and yet obliged to put up with it, not being in circumstances to resent affronts from rich and strong folk.