Etruscan numerals whether the numbers on opposite faces of Etruscan dice add up to seven, like nowadays. Some dice found did not show this proposed pattern. An aspect of the Etruscan numeral system is that some numbers, as in the Roman system, are represented as partial subtractions. So "17" is not written *"semφ-śar" as users of the Arabic numerals might reason. One instead finds "ci-em zaθrum", literally "three from twenty". The numbers 17, 18 and 19 are all written in this way. The general agreement among Etruscologists nowadays is the following (except about which of huθ and śa were "four" or "six",
Sex dice Sex dice Sex dice is a dice game intended to heighten the sexual atmosphere and promote foreplay. Instead of numbers, each face on the dice contains the name of a body part; the body part that faces up when the die is rolled must then be given sexual attention. "The Daily Princetonian" suggests rolling sex dice to "break the ice and extend [one's] foreplay." The "University Daily Kansan" advises a roll of the sex dice for those who are not particularly limber (and therefore cannot try "new and inventive position[s]") as a means to "bring variety to [one's] bedroom romps."