A grey wool turtleneck and navy jeans are the kind of a tested off-duty ensemble that you need when you have zero time. As for the shoes, you can take the classic route with tan suede loafers. Surely a safe option if we're talking style for teenage guys.
The go-to for casual street style? A grey wool turtleneck with navy jeans. Serve a little outfit-mixing magic by finishing with white athletic shoes. So if you're on the hunt for style inspiration for dressing as a teenage boy, this pairing is an amazing example.