"Basic Yin-stinct" is the first segment of the thirty-seventh episode of Yin Yang Yo! It premiered on April 14, 2008 alongside "Fighting Fooberty", and is the first segment of the eleventh episode in season two.
Yin's Woo Foo instincts are always spot-on, but Yang always ends up making the wrong choice. Carl manages to hex Yin by tricking her into eating Watermelon Seeds of Doubt. With Yin always second-guessing herself and unable to make decisions, Carl's evil plans have a chance to succeed.
- The title is a spoof of the film Basic Instinct.