She calls it her 'research,' a study into the art of oral pleasure. Each video, a new chapter in her self-imposed course. Today, it's a woman with a pierced tongue, swirling around the head, teasing, before taking him deep, her nostrils flaring as she struggles to take it all. She watches, her own tongue darting out to lick her lips, her breath hitching as the woman on screen swallows him whole.