Keep in mind, this is your BF or Husband. The two of you have had consensual sex hundreds of times.
For whatever reason, your husband/bf dies mid coitus. You’re confident you only have about two or three pumps left before you get yours & thanks to rigor mortis, he is still hard.
She’s that close when suddenly something horrible happens to me. My facial expression gets all weird, my body jerks, and I groan one last time. Ummm how’s she supposed to tell I’m dead right away.
In this hypothetical, am I a succubus who needs to steal a mortal man’s sperm in order to add the final ingredient to the Giant Death Golem that will conquer the earth and enslave humanity under the powers of Satan for all eternity?