For boys, the focus was often on external physical changes and the "awkwardness" of the transition:
While there isn't a single universally famous Hollywood movie with this exact title, it perfectly matches the naming convention of educational VHS tapes distributed in the 1990s by companies like: Puberty- Sexual Education For Boys and Girls -1991-
Explained as the enlargement of the larynx (the Adam's apple) and the lengthening of vocal cords. For boys, the focus was often on external