Si recovered quickly from his massive first orgasm with a woman but then his newer, duller, jock senses began to come over.
He could smell that Melissa was pregnant, that his new sperm already created a new child. Since she was no longer needed to mate, he quickly pushed her off of him and got Tammy, who he knew wasn't.
As every thrust of his thick cock inside of her, his mind lost information...thickening skull, mainly used to head butt people on the field, not used for thinking...As a result of his head butts on the field, he has a lower IQ because of all the head traumas...a slight damage.
his gruntings became more beastial and manly, as his body and mind quickly turned into a dumb alpha jock.
He orgasmed in the same thick manner, knowing by the scent, he had achieved his goal.