Until he cums and Alex passes out again.......

Alex's body tried to resist the feelings that this unknown (to her) cock was giving her, it was easily the biggest cock she'd had in her young lifetime and it was the first to fuck her raw. Alex whimpered as she realised that she was at her most fertile time at this very moment, she grunted as she felt the cock kiss her cervix.

"P-Please..... pull out....... I-I'm fertile and I don't want a baby yet......."

Principal Skinner laughed as he understood why she was squirming so much, unfortunately for her, he had no intentions of pulling out, instead he kept up a steady rhythm, his large balls continually hitting Alex's taint. Reaching over Alex's head, he grabbed a firm pillow, one that wouldn't move if someone tossed and turned on it and slid it under Alex's squirming hips.

"W-What are you doing......UGH!"

Leaning down, Principal Skinner started to increase his pace while simultaneously rubbing Alex's clit with his left hand whilst he started sucking on Alex's left nipple, making her shudder and groan from the now triple stimulation she was receiving. Alex was desperately trying to fight off her impending climax but it was no use, her assailant was just too experienced and she came hard, screaming out her release as Principal Skinner kept up his triple-pronged **** on Alex's body.

Four more orgasms made Alex's body shake uncontrollably before the inevitable happened and she passed out from sheer exhaustion. Principal Skinner noticed that she'd passed out and just focused on busting his nut as fast as possible and making sure she was good and bred. To make sure that she conceived, Principal Skinner leant over to a table next to the bed and grabbed a hypodermic needle loaded with a super fertility booster that he'd bought from Dr Bluder, a former student of his, injecting it directly into Alex's mid-section, Principal Skinner held the needle in until he was sure that all of the **** had been absorbed.

After he carefully removed the needle, Principal Skinner started hammering his cock into Alex's defenseless pussy before holding it at the entrance of her cervix, with one last thrust, he felt Alex's cervix dilate and allow his cock entrance. With a primal roar, Principal Skinner released his potent swimmers directly into Alex's helpless womb, giving his seed the best chance to penetrate one of Alex's eggs.