Our sexual lives are unnecessarily constrained by that old prude Euclid and his boring fifth postulate. Our minds have been freed these last ninescore years from the limitations of flat space; surely it is time for our bodies to follow!

The first section of the Riemann & Lobachevsky Kama Sutra (somewhat misnamed, as it's not a religious work) would concern sex acts possible in spaces with positive curvature: these would be the intimate and cozy acts, and masturbation. A preface for the beginner would explore the possibilities of flat spaces with unusual connectivity, such as the 3-space analogies to the surface of a cylider or torus (T^3). Advanced material would investigate the potential of strongly curved space for bondage.

The second section of the book would cover negatively-curved space. These acts would be expansive and open with typically yoga-like positions. Advanced material would include hyperbolic orgies.

An illustrated edition also available with work by M.C. Escher.

(It's often been argued that flat space*time* would be superior for sex, but there are convincing arguments that at least a little gravity is useful. However, the R&LKS would concern itself with spatial curvature only. A more general work will have to wait for Einstein's contribution.)