You have two choices: either you post something intelligent, which can easily come back to your face as any wise-a** will make himself a duty of proving on that special occasion that you are not that bright (not that I'm saying you are not bright, just saying there's always someone somewhere to burst a bubble); either you post something really funny and witty, in the spirit of the majority of the posts you already made, something we will all remember and that will generate the lounge to start a new thread in the honor of that post, new thread that will be filled with thousands of new funny and witty replies since your thousand post will stimulate all MR member that reads it to be a better, brighter and sillier human being.
Pressure enough for you? You're welcome
Congrats for your future life changing 1000 post!