You can see that the girl wants to, but as I understand it - her mother did not often let her go to parties. Slim and pretty, she wants to have sex and get off like a grown-up! And the guy's got a big dick, and he handles it like a man. The little sweetheart's got a hard-on. But she's riding his dick with gusto. I'm telling you, she's got potential. At the end of it, she's getting fucked in the ass! She's just twitching in ecstasy.
Sex with some stranger or new partner has its positives. It adds to the experience, even the thought of such a forbidden for many is arousing, counting on the stamina and imagination of the partner. Sex in the bar is somewhat relaxing and not as luscious as on the bed. This couple's anal sex and caresses deserve praise and encouragement.
Nearby are two young and quite ready for sex, and this to put it mildly weirdo jerks his dick with his hands in an attempt to raise it to a fighting position. Isn't that weird?