The second gentleman or second lady of the United States (SGOTUS or SLOTUS respectively) is the informal title held by the spouse of the vice president of the United States, concurrent with the vice president's term of office. Coined in contrast to "first lady" – albeit used less commonly – the title "second lady" was apparently first used by Jennie Tuttle Hobart (wife of Garret Hobart, vice president 1897–1899) to refer to herself. Second gentleman of the United States is the title held by Doug Emhoff, the husband of Vice President Kamala Harris. Twelve second ladies have gone on to become first ladies during their husbands' terms as president. The first to do this was Abigail Adams, who was married to John Adams, who was the first vice president from 1789 to 1797 and then the second president from 1797 to 1801. Thus, Abigail was the first second lady and the second first lady. The most recent to do this is Jill Biden, who is married to Joe Biden, the 47th vice president from 2009 to 2017 and then the 46th president since 2021. The current second gentleman is Douglas Emhoff, as his wife Kamala Harris became the 49th vice president of the United States on January 20, 2021. Emhoff is the first second gentleman of the United States. From Wikipedia