6 Digits in a Post(al) Code (in England)
6 legs on an insect
6 sides in a cubic metre.
I love 'ditloids' - The answer is - four suits in a deck of cards.
Ditloids what is CC in B?
There are over 200 Ditloids FAQ on WikiAnswers.
One ditloid could be '7 D S' - Seven Deadly Sins.
37 Degrees Centigrade is Normal/Natural Body Temperature
Lots of Ditloids can be found here. http://wiki.answers.com/Q/FAQ/4696
6 Stumps in a Cricket Match3 Billy Goats (Gruff)
The 7 Wonders Of The World
2 H D D are connected to a single PC
7 Brides For 7 Brothers (movie)