A book written well over a
Millenia ago in India for male citizens on how to please and how to be pleasured (of course, women weren't educated enough to read). As well as
acrobatic and sculptural positions, there includes advice for massage, fellatio, cunnilingus, kissing, touching and penis/vaginal compatability.
Many uneducated and
uncultured people nowadays see it only as the source to find "wild" positions for sex.