Lol, sounds like you don't know dick about the human reproductive system. Cock size literally doesn't even factor in terms of virility. Neither does a strong cumshot, wastever the hell that means. All that matters is they have sex, he ejaculates in her vagina and she must be ovulating to give his sperm the chance to reach an egg.
He probably wanted the baby since he held his cock in the pussy while he pumped all his cumshot out...but she didn't as she quickly ran off probably to go and push it out into the toilet. Little does she know that pregnancy will be quite certain with his beautiful thick and long cock and strong cumshot...
He's got a great cock I'd let him give it to me for knock up...;) shame they didn't take time to show us his cum leaking out..proof of the impregnation attempt as it were..it did have the look of a pregnancy fuck