Vatsyayana Kama Sutra Part 2 Chapter 5 Sexual union by On Biting and the means to be employed with regard to women of different countries
One of the partners could bite himself/herself while having sex and this would be out of sheer pleasure that she/he is getting, while having sex. Another reason for biting during sex is that one of the partners might enjoy biting the other partner while having sex. Yet another reason for biting while having sex is that one partner might enjoy the pleasure/pain of being bitten while having sex and so the other partner is trying his/her best to please the other partner, by biting him/her while...