What is keep it on the down low?

"Keep it on the down low" is a phrase used to indicate that something should be kept secret or confidential. This phrase is commonly used when discussing sensitive or private information that should not be shared with others. It is often used in domestic situations, business dealings, and personal relationships. The origin of this phrase is not entirely clear, but it is believed to have originated from African American Vernacular English in the United States during the late 20th century. The phrase gained popularity in the mainstream during the 1990s, when it was used extensively in music, television, and film.