Candace gets grounded. As revealed in " Phineas and Ferb's Quantum Boogaloo ", 20 years later, after the leadership seminar, Stacy became the President of Uruguay . She probably got tips after Candace left. Candace's guesses as to what F.R.E.E.P.O. stands for includes "Frequent Rampages Encourages Enormous Perpendicular Octagons" and "Free