This reminds me of a radio program I heard a few years ago about how little sex is studied in general.
I don't remember much about it, but mentioned was a particular study where two 'little people' did the deed in an MRI machine. Apparently the penis 'boomerangs' during coitus...no comment.
Couldn't find the radio program but here's what putting "MRI penis boomerang" into google found me
MRI Reveals the Penis Is Boomerang-Shaped During SexSo we have the Dutch to thank for this.