This story kind of reminds me of the one where the guy was finding these cool, bubbled looking yellow rocks and was putting them in his pocket. After he got home he found out they were Uranium. (story from GPEX and a bad memory)
However this is real wierd. Eco- terrorist?
"Hey man if we spray this stuff on rocks then people find them and put them in their pocket, it will catch on fire!"
"Yeah that will stop those lousy beachcombers from taking the rocks off the beach and harming the fish"
Poor husband trying to pull the burning shorts off his wife. (Stop thinking like that you dirty minded boys)