immature

The most cogent justification I've heard for the neologism is a remark by Savage, quoted in one of the earlier Wikinews articles: "... it is an insanely dirt joke. It is vile, as are Santorum's comments about gay people."

The most cogent objection I've heard (irl) to the neologism is that it's a cruel thing to do to all the other people in the world whose family name is Santorum.

Indeed, both these comments have merit. :)