not furious - just chuckling to myself at your astonishingly wilful ignorance of what constitutes date rape...

I already explained how it could be done, by coercion and implicit or explicit threat...
That does not require much imagination, or empathy for victims...

But you seem obsessed by the mere mechanics of penetration...???
Like it's just an exercise in practical engineering....???

"X amount of force met by Y amount of resistance" - she opened her mouth in the end,
which obviously meant she was a willing participant...

Which is my reasonable guess how a defence lawyer will focus on manipulating a jury...

Of course, there are brutish methods for pressing in the right places and forcing an unwilling victim's mouth open...