My moms boyfriend tried to put his hands on me?

Me and my mom were arguing , ( im 17 by the way ) and the idiot comes in the middle of it and tells me to shut up before he beats the hell out of me . Im not his kid and he just met my mom 2 months ago . And yet she lets him try to talk sh*t to me like he's my dad . So i slam the door on him and tell him to leave me the fu*k alone and he breaks my door down and rushes in my room . I grab my nife i keep under my bed and tell him to get out or i swear i would kill him . So he leaves but if i wouldnt of had my nife he probley would have beat the sh*t out of me . He's 6-4 400 pounds so it wouldnt of been pretty . And the whole reason my mom and me were arguing was because she said she found a ciggerette in my pocket which i was holding for a friend , and besides ill be 18 in a few months so if i did want to smoke it wouldnt be a big deal

I cant take living here anymore . Im ready to just drop out and live with my dad . but i dont want to be what he and my mom think im going to be

in this case, i think your mom was being unfair and only thinking about her own "love".
well, when you can find time with your mom alone, try to persuade her to break up.
also, the best way to act when he tries to beat the sh*t out of you is maybe to just listen to him and keep calm, so that when you dont have a knife, he wont just really beat the sh*t out of you.

if the jerk dose put his hands on you then call the police and have him arrested!!! a two mth bf has no right to say anything to you and your mother needs a good talking to. It took almost a yr and half for my bf to say anything to my daughter but he would never lay a hand on her. If it is possible i would go say with your dad till your 18.....

first i hope you know smoking can make you have a shorter life most people do it to act cool . second did your mom know he was guna beat the sh** out of you ? if not you need to tell your mom and if that dosnt work tell your mom you hate him , no parent should mary someone their kid dosnt like .
good luck and remember smokings not cool dont start after u do ,you cant stop.