It'll kill ya.
http://www.nydailynews.com/news/national/2011/06/04/2011-06-04_13yearold_little_leaguer_hayden_walton_dies_after_being_hit_in_the_chest_with_ba.html (http://www.nydailynews.com/news/national/2011/06/04/2011-06-04_13yearold_little_leaguer_hayden_walton_dies_after_being_hit_in_the_chest_with_ba.html)