Reese Witherspoon says she doesn't quite know how her youngest son came up with his nickname for her. In a social media post Wednesday, Witherspoon revealed her 12-year-old son Tennessee Toth calls her "Morty." The actress shared the video as part of a social media trend revealing what the people in her life call her.

Reese Witherspoon is a woman of many talents — and names. In a video shared on TikTok and Instagram on Wednesday, May 7, the actress, 49, listed the names by which different people know her, following a popular social media trend.

Reese Witherspoon reveals the unexpected name her son calls her instead of ‘mom’ - The ‘Legally Blonde’ actor shared the nickname in a recent social media video