Knights of the Lambda Calculus
n.
A semi-mythical organization of wizardly LISP and Scheme hackers. The
name refers to a mathematical formalism invented by Alonzo Church,
with which LISP is intimately connected. There is no enrollment list
and the criteria for induction are unclear, but one well-known LISPer
has been known to give out buttons and, in general, the members know
who they are....