I just finished "On Love and Sex" by Khushwant Singh. The title aptly describes what this book is all about. The characteristic charm, wit and unabashed treatment of sexuality that is a hallmark of Khushwant Singh's writings are omnipresent throughout. However, in today's day and age, many might rightfully find his psycho-analysis of female desire brazenly mysogynistic if not disturbing on many grounds.
The most disappointing aspect about this particular book, though, is that it is a hotchpotch collection of author's ruminations from one book, excerpt of a chapter from another one and few standalone essays with nothing but the topic of sex in common. It never rises above the level of a sophisticated erotica collection, in my opinion.