The `-P' convention

Turning a word into a question by appending the syllable `P'; from the
LISP convention of appending the letter `P' to denote a predicate (a
boolean-valued function). The question should expect a yes/no answer,
though it needn't. (See {T} and {NIL}.)

      At dinnertime:

  Q: ``Foodp?''

  A: ``Yeah, I'm pretty hungry.'' or ``T!''

  At any time:

  Q: ``State-of-the-world-P?''

  A: (Straight) ``I'm about to go home.''

  A: (Humorous) ``Yes, the world has a state.''

  On the phone to Florida:

  Q: ``State-p Florida?''

  A: ``Been reading JARGON.TXT again, eh?''

[One of the best of these is a {Gosperism}. Once, when we were at a
Chinese restaurant, Bill Gosper wanted to know whether someone would like
to share with him a two-person-sized bowl of soup. His inquiry was:
"Split-p soup?" -- GLS]


Source: The Jargon File