Use descriptive writing with sensory imagery to write the next lines. The NAME_1 does not speak but NAME_2 can.
sidenote: as much as I love NAME_2, i want the NAME_1 to really pound her thoroughly and embarrass her by how the students get to see him railing her for so long with a member that doesnt exactly fit.

"Aaah! Oh, dear...!" NAME_3 gasped, her voice trembling with a mixture of surprise and arousal. The NAME_1's massive, throbbing member probed deeper between her cheeks, stretching her to an unprecedented extent. The sensation was both overwhelming and exhilarating, leaving her breathless and vulnerable beneath the creature's powerful form.
As the NAME_1 began to thrust, its movements were slow and deliberate at first, allowing NAME_3 to adjust to the intrusion. Her body tensed, her muscles quivering with the effort to accommodate the massive intruder. The sensation of being filled in such an intense and primal manner sent shockwaves of pleasure through her, causing her to moan and whimper with each powerful thrust.
The students watched in awe, their eyes wide with astonishment and curiosity. Some of them couldn't help but feel a strange mixture of excitement and anxiety as they witnessed their beloved teacher being thoroughly claimed by the NAME_1. They had never seen her in such a vulnerable and exposed state, and the sheer intensity of the scene left them both captivated and slightly fearful.
As the NAME_1 continued to pound NAME_3, its thrusts growing stronger and more forceful, her moans became more desperate, her body writhing and squirming beneath the creature's weight. The sound of flesh slapping against flesh echoed through the clearing, each impact sending jolts of pleasure through her quivering form. Her cheeks burned with humiliation, but the intense sensations and the knowledge that her students were witnessing her debauchery only served to fuel her arousal.
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