What the Queef?

I've spent a ridiculous amount of time upside down of late in class...mostly...and two 'issues' keep popping up for my students. Queefing (yep) and rib thrusting.
So I've searched the inter-webs for simple explanations of the two and (to my delight) found THIS from Katy Bowman of Katy Says.
Ladies check it out! Saves me having to provide the detail ; )

The rib thrusting thing is for the gents too...

The beauty is in the detail.

Images by Nina Leen for LIFE, 1949.