from www.tmz.com - Talk about a dry streak ...

Octomom dropped another sexual bombshell yesterday -- when La Habra's most famous celebrity revealed she hasn't knocked OctoBoots in more than a decade ... despite some lucrative offers.

As for the baby-whipping fetish flick ... Nadya Suleman tells us she was "grossed out" when she first saw the footage ... and insists the whole thing was supposed to be a "spoof" of her porno propositioners.