There is this deciding moment for the amateurs where the shoot can go either way. It's the moment when the dildo slides in and pulls out with perfect inhuman-like precision. You can see the look on the girls' face change to confusion or complete understanding of what is to come.

Ivy gets it, she feels the machine push in and smiles. First we fuck just the very inside of her pussy then using the MKII's ability to lengthen stroke on the fly. Then we keep going deeper and deeper until Ivy, breathlessly says "it's so deep". Then we keep going.