Boxing tips I guess?!?!??!?!?

ok so there is this kid, he is tall (a little taller than me) but skinnier than me, I dont have anything gainst him but he is being a B and he won a couple of fights so he probably thinks that he is the S by now, I know that I can drop him but where should I get him? I mean Im strong and even though I dont fight that much Im not.. hmmmm... fight-shy? (you know what I mean) but I know that most of the times a fight is not decided by one good punch but a series of good punches... oh he also drinks a lot (I mean a lot, he is an alcoholic, a youg one though)! is it safe to punch him in the liver??? anyways we are just fighting for fun (and he probably thinks that Im a wimp since I dont fight, It is always like that, people think that Im bad a fighting so they choose to fight with me to impress some girl and WAAM! I win! lol)