J. Random /J randm/ , n. [common; generalized from J. Random Hacker ] Arbitrary; ordinary; any one; any old. J. Random is often prefixed to a noun to make a name out of it. It means roughly some particular or any specific one. Would you let J. Random Loser marry your daughter? The most common uses are J. Random Hacker , J. Random Loser , and J. Random Nerd ( Should J. Random Loser be allowed to kill other peoples' processes? ), but it can be used simply as an elaborate version of random in any sense. Prev Up Next J Home J.