Octomom Vs NueveMom

Octo had some competition recently from Mexico's NueveMom -- who claimed to be pregnant with 9 babies. Her story might not be true, but if it is ... it could have shot Octo's record for most children delivered at a single birth to survive straight out the window.

Octo tells TMZ tired of all the Octofakes lately, telling us, "No one will ever take my Octo title, I'm in the Guinness Book Of World Records!"