J. Random: /J rand'm/ 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 gun down other people?"), but it can be used
simply as an elaborate version of random in any sense.