Predator: The Quietus (1988)

A baby is crawling in his front yard unattended and happen to findnd a small meteorite that just fell from space. So he puts it in his mouth and swallows it and in less than 24 hours he becomes a young teenage which blows his parents Minds and he has a very lustful taste for blood. And the new girl who happened to have just move next door is having an awesome is effect on his biological function. In which everything is since he was only born 24 hours ago but the mixed feelings he is getting from the young lady next door is yet to be heard seen and felt in short The Best Is Yet To Come