Bethy's belly

Bethy is a 20-ish woman. She was relaxing one evening in her living room, wearing a midriff baring top. Her belly was currently covered with small food crumbs with her smartphone laying atop of it. She was watching a video from her phone that she sent to her TV. Suddenly, she felt something entering her belly button. By looking down at her belly, she notice that it was doing waves, moving the crumbs to her navel, which was then bringing them in. Curious, Bethy put her finger on her navel. It responded by trying to suck her finger in. She pulled it off her belly button and then look down at it. It was apparently moving what seem to be its lips.