The phrase 'on my mamma' is African American Vernacular English slang for swearing on one's mother, a way of insisting that what follows is true. Short spoken versions of the line circulate online as meme and reaction sounds, where creators use the oath to add emphasis, humor, and street credibility to a claim. Because the clip is less than a second long, it works as a quick audio stamp rather than a full line of dialogue, and its appeal comes from the familiar, confident tone rather than any single film, show, or viral video.