In Turkey the color of mourning is violet. In most Moslem countries and in China it is white.
If you toss a penny 10,000 times, it will not be heads 5,000 times, but more like 4,950. The heads picture weighs more, so it ends up on the bottom.
The letters KGB stand for Komitet Gosudarstvennoy Bezopasnosti.
To "testify" was based on men in the Roman court swearing to a statement made by swearing on their testicles.