Doctor: Why did you do it, Simon?
Mary Hobbes: [voice of Simon] Because Mary let me, Doc. They always do. They always do. [laughs]
Mary Hobbes: [voice of Simon] Because Mary let me, Doc. They always do. They always do. [laughs]
Doctor : Why did you do it, Simon?
Mary Hobbes : [voice of Simon] Because Mary let me, Doc. They always do. They always do. [laughs]
http://www.moviequotedb.com/movies/session-9/quote_140216.html