The phrase "a young dude" is correct and usable in written English.
It can be used in informal contexts to refer to a young man or boy, often in a casual or friendly manner.
Example: "At the party, I met a young dude who was really into skateboarding."
Alternatives: "a young guy" or "a young man".
"But he's a young dude, too.
Okla Nawafleh is a young dude in a baseball cap, but he proudly describes the desert life.
Sporting the name Brandon Teena, she swaggers into the bars of Falls City, Nebraska, as a young dude — an utterly mad experiment, for which she pays a horrible price.
The musical, as described by its author, Deep Singh, was to feature characters including the starman and a "young dude" named David, villainous Diamond Dogs and a band that would perform about 20 Bowie tracks like "The Man Who Sold the World," "Let's Dance" and of course "Heroes".
Compared to Morrison, Earle is still a young dude.
I was just a young dude on the drift.
Plus, after a heavy, serious relationship women may want something light and temporary, which can be found with a younger dude.
If there were such a thing as GQ Jr. or Esquire for Kids — a young-dude analogue for magazines like Seventeen or Teen Vogue — it might be something like "Takers," a primer in juvenile, aspirational cool for guys who might not be able to handle the suavity of the "Oceans 11" franchise or the leathery angst of "The Expendables".
But a new Bowie doesn't mean a skinny young dude with pale skin and a zigzag painted on his face making facsimiles of Ziggy Stardust or Aladdin Sane.
Part-quilted jacket, part-diving suit (neoprene is currently trending among renters), I was sceptical but it won me what might just be the ultimate New York City compliment: praise from a bouncer, in this case a cool young dude who seemed disappointed to hear that the website didn't cater for guys – yet.
Accompanying Ms. Bonham on stage was an extraordinary cellist, Gabriel Royal -- a dapper young dude whom Tracy discovered busking and crooning on the 2nd Avenue Subway.
