You shart and then you think you sat in some berries, remembering that you had eaten tomatos the night before, Thus finding tomato seeds in your sharty liquid.
The effect you get when you squeeze a tomato sauce bottle and the sauce goes anywhere but at the food, usually sideways onto your shirt or pants. The effect can apply to any liquids including urine.
Example 1:
Person 1: "What happened to your shirt?"
Person 2: "Tomato Sauce Effect."
Person 1: "Oh right, yeah, I hate the Tomato Sauce Effect."
Example 2:
Person 1: "Hey man, why is there urine all around the toilet and on your pants?"
Person 2: "Sorry bro, I had a Tomato Sauce Effect."
when a person has really bad diarrhea and drinks about 9 gallons of red drinks in a time period of about two to three hours while eating tons of red colored foods and the takes a huge red diarrhea dump in a bowl then makes french fries and then consumes the french fries and using the diarrhea as ketchup; also possible to do with more people