It depends on what type of establishment the stocker is working at. If he is a stocker in a warehouse, he may be driving a forklift. In that case, make sure you are laying square on a pallet, with none of your limbs overhanging the edges. If you are being stocked by a clerk in a clothing store, try to be real "bendy" so the clerk can fold you up properly for display. Since we are talking ghosts here, naturally this is all after midnight, so if you don't want to be stocked, don't hide out in those establishments past midnight.
Now, the real answer -- I just wasted 4, 5 minutes answering a really stupid question. So who is stupider -- me or the questioner?