for the last 6 mnths i have randomly coughed up a little solid rock, it is white/beige in color and it stinks. Before it happened lke 2 times a month, then yesterday morn, it happened. i thought nothing new, then again this morning!!it's a little bigger than yesterday. it stinks, a couple of guys i know say its normal, but they never get it that often. i'm a 25 year old male, other than being scared about that i feel fine.