Iv lied to my parents before, had sex, drunk, smoked, taken drugs. My mum says i dont act like a normal teen?

Im not proud of most of the stuff iv done but i enjoy it. I love partying and hanging out with my friends more than being at home. I actually hate being at home and i dont know why? My house isnt violent or anything. I argued with my mum a few days ago and she said i wasnt like a normal teenager? Is this true? I mean all the people my age i know do the same things... Am i really that bad? Arent all teenagers like this? Im 15 btw...