Today's PJ

Why do bad jokes strike me in the dead of the night?
Well, here goes:

Q: Why do you call a statistician who can't fit a non-parametric model?
A: A splineless fellow

http://en.wikipedia.org/wiki/Spline_(mathematics)
This link above is the math 'intro' to splines.
The word spline is of East Anglican origin.
Dictionary meaning: spline n. A flexible piece of wood, hard rubber, or metal used in drawing curves.