Valerie is just showing Anna the wonders of humping and tribbing. She’s showing her what it really means to hump/trib another woman’s 🐱 to orgasm. The intensity from the orgasmic looks on both of their faces means that Valerie is humping/tribbing
You noticed the ads plastered all over the subway on your commute to work. Word must have spread quickly because before the end of the work day more than a few of your coworkers were looking much curvier than they had that morning