30 Secrets Your Waiter WIll Never Tell You.
14. If you’re having a disagreement over dinner and all of a sudden other servers come by to refill your water or clear your plates, or you notice a server slowly refilling the salt and pepper shakers at the table next to yours, assume that we’re listening.
The coeus, or secret viper; and the cobra de capello, or spectacle — headed viper. (1801)