Polyploidy in sea urchins

One thing I remember from my zoology student days is that nicotine causes polyploidy in sea urchins...a useful interjection if you can’t think of anything to say at a dinner party. It means that they end up with more copies of chromosomes in their cells than they are supposed to have. What I don’t get, and call me thick, is how do they light up their cigarettes in the first place????