The tag implication #64577 reverse_kneejob -> knee_on_pussy is pending approval.

Reason: If a kneejob is rubbing the penis with the knee (or kneepit, more usually) in order to cause arousal, then a reverse kneejob is rubbing the vagina with the knee to cause arousal. Simple.

is not a very intuitive name for that concept, and how are these two tags different anyway? Wouldn't it be better as an alias?

These tags also confused me when trying to tag kneeing_crotch, not to be confused with knee_on_crotch.

In fact, I also tried looking for the term for using the knee as a weapon, kneeing, not to be confused with kneeling.

Ah, here we go, great example.
post #4724436
It's a knee kick.