He and his mother could swap bodies. What was worse was the mother was always more powerful with their powers so ultimately they would swap back and forth when she wanted to.
And unlike other powers like strength where they would fade once separated Sam and his mom(Danielle) would lose the ability to swap, but not swap back.
His mother really enjoyed being young and a boy, unlike Sam that didn't enjoy being a middle aged woman. Especially with his step dad around.
