Reminds me of a "real world" web language shootout I once read, which included accessing a database populated with a large dataset.

The author used a query along the lines of:

    SELECT * FROM table ORDER BY RAND() LIMIT 1

Except for the language they wanted to win, which was basically written like:

    SELECT * FROM table WHERE id = RAND()

Which, of course, resulted in it their favorite being the clear winner.