I believe that the LDK should be classified as an extra.
If a girl is intentionally trying to get you off with a reverse ass grind, or a frontal pussy grind to completion, this should be an extra. She’s intentionally trying to make you cum, and doesn’t stop until she completes her mission just like FS, HJ, and BJ.
Just my opinion. What are your thoughts?


You make a point. But still it all depends on your sensitivity.