Elizabeth Stamatina "Tina" Fey ( /ˈfeɪ/; born May 18, 1970) is an American actress, comedian, writer and producer, known for her work on the NBC sketch comedy series Saturday Night Live (SNL), the NBC comedy series 30 Rock, and films such as Mean Girls (2004) and Baby Mama (2008).

Fey first broke into comedy as a featured player in the Chicago-based improvisational comedy group The Second City. She then joined SNL as a writer, later becoming head writer and a performer, known for her position as co-anchor in the Weekend Update segment. In 2004 she adapted the screenplay Mean Girls in which she also co-starred. After leaving SNL in 2006, she created the television series 30 Rock, a situation comedy loosely based on her experiences at SNL. In the series, Fey portrays the head writer of a fictional sketch comedy series. In 2008, she starred in the comedy film Baby Mama, alongside former SNL co-star Amy Poehler. Fey next appeared in the 2010 comedy films Date Night and Megamind.

She has received seven Emmy Awards, three Golden Globe Awards, four Screen Actors Guild Awards, four Writers Guild of America Awards and has been nominated for a Grammy Award for her autobiographical book Bossypants, which topped the The New York Times Best Seller list for five weeks. She was singled out as the performer who had the greatest impact on culture and entertainment in 2008 by the Associated Press, which gave her its AP Entertainer of the Year award for her satirical portrayal of Republican vice presidential candidate Sarah Palin in a guest appearance on SNL. In 2010, Fey was the recipient of the Mark Twain Prize for American Humor, the youngest-ever winner of the award.

Ryan Thomas Gosling (born November 12, 1980) is a Canadian actor and musician. He began his career as a child star on the Disney Channel's Mickey Mouse Club (1993–95) and went on to appear in other family entertainment programs including Are You Afraid of the Dark? (1995), Goosebumps (1996), Breaker High (1997–98) and Young Hercules (1998–99). His first serious role was as a Jewish neo-Nazi in The Believer (2001), and he then built a reputation for playing misfits in independent films such as Murder by Numbers (2002), The Slaughter Rule (2002), The United States of Leland (2003) and Stay (2005).

Gosling came to the attention of a wider audience in 2004 with a leading role in the romantic drama The Notebook, for which he won four Teen Choice Awards and an MTV Movie Award. His performance as a drug-addicted teacher in Half Nelson (2006) was nominated for an Academy Award and his performance as a socially inept loner in Lars and the Real Girl (2007) was nominated for a Golden Globe Award. In 2007, he starred in the courtroom thriller Fracture.

A know-it-all or know-all is a person who believes that he/she has an accurate comprehension of a topic and/or situation when in reality, his/her comprehension is inaccurate and limited. This belief may or may not be outwardly expressed.

The German word Besserwisser is also used in some languages, literally meaning "better knowing [person]".