J

jargon n. A pseudo-language pertinent to a particular specialized field of endeavor. Usually sadistically cryptic to the uninitiated.

jogging n. A masochistic practice whereby the average person can improve the condition of his heart and lungs while at the same time pounding the rest of his body to bits.

justice n. A senile old man who administers same while seated on a bench. The treatment administered by said old man.

A man may see how this world goes with no
Eyes. Look with thine ears: see how yon' justice
Rails at yon' simple thief. Hark, in thine ear:
Change places; and, handy-dandy, which is
The justice, which is the thief?
 
  --William Shakespeare, King Lear

juvenile delinquent n. An oxymoronic phrase much in vogue with bleeding-heart liberals, which permits adults to slap their miscreant children's wrists instead of administering a sound thrashing or other suitable lesson.

Suppose you merely scolded your puppy, never punished him, let him go on making messes in the house ... and occasionally locked him up in an outbuilding but soon let him back into the house with a warning not to do it again. Then one day you notice that he is now a grown dog and still not housebroken--whereupon you whip out a gun and shoot him dead. Comment, please.
 
  --Robert A. Heinlein, Starship Troopers