When you push the handle in, the spikes lay down and the handle collapses inwards. When you need it, grab the little bit of the end sticking out and SWING your arm! Inertia will make the handle pop out and that will cause the spikes to stick out. Whack the rapist/mugger, call the police, then call the paramedics (that mugger will need those doctors). Then sit down and enjoy the free soda that comes with purchase!