S1·E41 Give 'Til It Megahertz

Malcolm sends a virus into a music box, hoping that when Jennifer were to open it, she would fall in love with the first person she'd see - Malcolm! Sam is very angry when he feels that Jennifer is hoping to dump him for Malcolm. Unfortunately for Malcolm, however, it's not Jennifer who opens the box - it's Mrs. Starkey! She then falls for an unwilling Malcolm, and a reluctant Sam must destroy the virus in order to break the horrid love spell.