Some McDonald's customers come up with pretty fancy orders.
Quora user and former McDonald's employee Chelle Gordon wrote that one man insisted upon being served poached egg whites.
"The order taker had no idea how to answer that, so they called me as the manager on duty," she wrote.
She told the man that poached egg whites were off the table as "it is not on the menu, we have no one trained to separate eggs, and we have no way to time it so we wouldn't know when it was done."
The man ended up lingering in the drive-thru and arguing with Gordon, until he left empty-handed.
"Ultimately, if I had an hour to test it out, I might have been able to come up with something edible," she wrote. "That is, if I had stopped managing for an hour to work on his order. But it's fast food, not a gourmet restaurant."