New of a pilot and his friend hired to take a "dearly departed's" ashes out over the ocean and dump them. Once airborne in the 172 and over the Atlantic coastline, the guys realized they'd have to open a door to get the ash out. One opened the urn while the pilot crabbed the plane to relieve wind pressure on the door and pushed it open. The turbulent air blew the ashes all over the inside of the plane while the suction kept them from going out the door. They were thoroughly fogged with ash when they came back to the AP.
"One opened the urn "
This is where he made his mistake. Why open the urn? Just toss the whole thing out the door.