The Kiss is a word in Kindred terminology that refers to the act of biting and drinking blood from a victim, as well as the phenomenal pleasure that it provides both participants.
For a vampire, the act of feeding becomes highly sensual, regardless of their gender or sexual orientation. This applies to the victim as well. It is an extremely intimate experience, perhaps the most intimate experience either participant will ever experience. For the victim, a vampire's bite brings exquisite bodily pleasure, to the point of causing temporary unconciousness and memory loss.
After the fact, a vampire automaticlaly licks the puncture wounds caused by their fangs closed. Leaving virtually no trace of their work, besides the bloodloss-induced side effects of drowsiness and dizziness.