Meanings of young stud in English

So why's a young stud like you pulling barricade action?

Even a magnificent young stud can break a leg when racing over treacherous ground.

It would have surprised me if she hadn't been carrying on with a young stud in secret.

The young stud gets so fed up with the middle-aged Eeyore's wailing that he makes over everything from Cal's patter to his skin care.

Nodding graciously to the reverent head-tilt of a young stud he once coached, he emptied the trashcans, scraping his forearm, then shuffled toward the bathroom.

We were four young studs eager to impress...