When that pussy starts to throb and there's nobody there to cool it, the horny situation can be extended for days. Even satiation calls for more rounds in this case, on the verge of nympho.
Laying in bed, thinking about sex while gently tracing her slit. her mind settles on a random girl, it happens after seeing so much pussy. First impulse is to bury her face in this girl's pussy, tongue fucking her while fingering her own greedy pussy.
The female body is so intricate, time is needed to discover all the tender spots, the reactions from a gentle caress or a wild makeout session. To eat her out wile she sits on your face, to make her scream.