Will this happen if you smoke weed for the first time?

You take ONE puff and pass it back, will you feel sick after a while, kill braincells, go through depression, get the urge to do it again? Will I need it? Crave it? Will I be seeing things and be paranoid for two weeks? Or will I get a high or whatever happens the first time and its my choice to try it again? Or my brains choice? Like if you try it and people say it leads to harder drugs, is that your choice? Like: You smoke and say, ''Oh, that's awesome, I think (I) want to try something else. Or, you smoke and you're like ''I need to try pills.'' Will you be compelled to do it and have that feeling to or is it your decision. If you have one puff thats all will you just be fine the rest of your life, will anything happen?