20 Things You Somehow Missed In Titanic
9. Jack's Drawing Of The One-Legged Prostitute Is Briefly Visible
In the movie's first act, Jack shows off his various drawings to Rose, including one of a one-legged prostitute - though at this point Cameron cuts away from the page and doesn't actually show the drawing to the audience, focusing instead on Rose's shocked reaction.
However, if you freeze-frame your way through the shot where Jack turns the page to his sketch of "Madame Bijoux," for a few quick frames the picture of the one-legged prostitute is actually visible.
And it's pretty much exactly what you'd expect, but nevertheless proves that James Cameron did indeed draw it for real.