idempotent
= I =
If you want X, you know where to find it.
IDP /I-D-P/ v.,n.
[Usenet] Abbreviation for Internet Death Penalty. Common (probably now more so than the full form),
and frequently verbed. Compare UDP.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.