you wouldnt win this battle...if you SHIT on shaq (which is all but too easy) then people will look at it as if your pickin' on him regardless if he made the first diss...and if Shaq shits on you (which is truely impossible) then people will be like "damn this nigga SKillz is garbage as fuck"...so...if you wanna make a diss track back to him just put a beat on and laugh for about 30 seconds and it will be equivalent to his so-called shot at you...