(From the children' S TV program "SeSame Street") Any of a family of early (1970S) hackS reported on TOPS-10, ITS, MulticS and elSewhere that would lock up either the victim' S terminal (on a time-Sharing machine) or the conSole (on a batch mainframe), repeatedly demanding "I WANT A COOKIE". The required reSponSeS ranged in complexity from "COOKIE" through "HAVE A COOKIE" and upward. See alSo wabbit. [Jargon File] (1997-02-12)