Sharing bodily fluids

I’m not sure about this animation.

I’m not sure if I feel uneasy about it.  I think I might.

It appears to be lumps transferring from the female to the male within a mutually shared fluid.  I mean, if you think about things in a yeuchy stylee, I suppose sex as we know it is a bit odd.  The exchange of fluids.  Ok, it’s mainly the transfer of, er, ‘baby gravy’ from the male to female.  Disgusting.

But not as disgusting as the above!

And WTF are those lumps?