EMILY: Oh, now you have a problem with swans and thrones.
LORELAI: Because swans and thrones scream one thing, Mom. Siegfried and Roy.
Siegfried and Roy were a duo of German-American magicians and entertainers, famous for their appearances with white lions and white tigers. They were Siegfried Fischbacher (1939-2021) and Roy Horn (born Uwe Horn, 1944-2020). They had a very successful act at the Mirage casino in Las Vegas from the 1990s until 2003, known for their flamboyant style, sometimes compared to Liberace.