Usually fine print-ese for: "We know this product is for something illegal and/or immoral and/or fun. However, because this is a more-or-less free country, we can manufacture it and sell it anyway to an eager public. So, have fun with your bazooka/missile launcher /wiretap / black box /lockpicks /torture device /radar masker /pornography /sex toy /meth lab kit /hemp seeds /tarot cards /nuclear device instructions /fake ID press but for heavens' sakes DON'T SUE US, because we'll claim we sell them for...um...entertainment, never mind the detailed instructions in the box. Neener neener."

For educational purposes only means basically the same thing.