Obama once was embarrassed greatly. After losing to a high school student in playing basketball with Cameron several days ago, he signed the wrong date when visiting the famous Westminster Abbey. Don't forget there was also that nasty incident of car trouble. But this time he was even more awkward: at the state banquet hosted by the Queen of England, Obama didn't know the royal etiquette of Britain and kept talking when the national anthem was played. He toasted and proposed a drink to the Queen, who ignored him, making Obama quite embarrassed.