The cartoon appeared on the cover of the current issue of El Jueves, a satirical publication. In it, the cartoon-Prince says, "You know, if you get pregnant, this will be the closest thing I'll have done to work in my life."
On its web site today El Jueves posted a sample of the cartoon (as did just about every newspaper in Spain, except for the right-leaning ABC) along with a statement that I've translated below:
We are graphic humorists and we work fully aware of our charge, what the readers expect of us, which is to explore the limits of freedom of speech. We can actually accept that on occasion we may be excessive. It's part of the job. If we go too far, there are the courts but...banning? The police inspecting newsstands throughout the country and pulling our magazine? Are we really writing this on July 20, 2007?