Brewster, Maggie, and the twins wonder 'Why do our heads hurt after we drink cold stuff too fast?'They meet Thinky Brain. He explains that ice makes the mouth cold and when the brain tries to warm things up fast it gives you a headache feeling. Discover answers to questions only young children ask! Through creative thinking, Brewster and Maggie take young viewers on a journey of discovery in a way that will not only entertain, but will get their creative thinking caps on! Based on the book series `Brewster the Rooster' by Clifford Parrott.