Sex dice is a dice game intended to heighten the sexual atmosphere and promote foreplay. Instead of numbers, each face on the die 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."
A commercially available version, also called Foreplay Dice, consists of two dice, one with body parts and the other with activities; a roll of the dice will determine which action is to be applied to which body part. According to SPIN magazine, the game is especially popular among American teenagers.
Video Sex dice
References
Source of the article : Wikipedia