quote [ A few months later, a friend IMed me to ask if I knew what the "mini orgasms" she was experiencing during masturbation were. They felt awesome but not like a grand finale, she explained. "I don't know what they are, but I think I've had them too," I said. If both of us experienced these, I thought, they can't be so rare.

So, I asked sex researcher Nicole Prause, PhD, if this was a documented phenomenon. And it turns out we weren't making it up! The scientific term is "increased vaginal motility with increasing arousal," Prause tells Bustle. Here's what we know about them. ]