The internet is awash in fake pills and dangerous devices that claim to help enlarge a penis. These ladies appear to be taking a more direct approach. Grab one end and pull, hard. Either that, or it’s a new exercise routine they’re working on. Squeeze, pull, twist, and repeat. Ignore the screams.
I found this on the Gustos Extremos tumblr. I think (although I’m not entirely sure) that it’s from the Strapon Dreamer site.