SOME KIND OF A NUT
'(<a href="http://www.j-archive.com/media/2010-12-20_DJ_15.jpg" target="_blank">Sarah of the Clue Crew stands by a plate of nuts in New York</a>)  New York City chestnut roasters know you have to slice the nut, preferably across the rounded sided if you don't want this to happen due to pressure build-up'
an explosion