stereotypes

i've been wondering,do people actually fit into any stereotypes?like for example teenagers (which was my main thought but it could be about any of the stereotypes),like ya know,partying and drinking? or like the different genres of teenagers?like jocks or nerds,popular girls and whatnot,because those were more of a movie thing as far as i'm aware but maybe people did actually fit these? cuz basically noone i knows really fits into any stereotype,or atleast not the classic ones.