by marriedct May 19, 2008
To contradict yourself or deceive others verbally, changing your story similar to a slut bouncing from man to man.
Alex: “Maddie said she WASN’T going to the party tonight, but she actually did! When I asked her about it she said she told me earlier that she WAS going”
Julie: “I guess she was slutmouthing.”
Alex: “I hate when people slutmouth.”
Julie: “I guess she was slutmouthing.”
Alex: “I hate when people slutmouth.”
by ThenThere’sBoe March 04, 2023