Source : Free On-Line Dictionary of Computing

What's a spline?
     
        [XEROX PARC] This phrase expands to: "You have just used a
        term that I've heard for a year and a half, and I feel I
        should know, but don't.  My curiosity has finally overcome my
        guilt."  The PARC lexicon adds "Moral: don't hesitate to ask
        questions, even if they seem obvious."
     
        [{Jargon File}]