Dressed like a space-age beauty contest winner from a sci-fi movie, Valory Irene looks like she stepped out of a painting. That plastic pump she's brought along is going to send Valory into outer space. Valory places the cup over her beautiful cootchie and squeezes the black bulb attached to it.
This gizmo is called a P-pump (also called a "clitoral therapy device") and what it does is to suck the air out over the area it covers. That vacuum increases blood flow to Valory's vulva and that in turn increases stimulation and sensitivity. It also has the effect of making her lady lips puffy for a short time.
Highly turned on, Valory removes the pump and heads for the Big O by rubbing her clit and lips and fingering her honey-box. When a girl feels good, we feel good.