What: Mario Brothers 2 cartridge (Game Boy Advanced System)
Where: Discovered in the Christmas tree stand floating in sludgy water
Duration: Approximately one week
Result: Game over.
What: Super Mario 3 cartridge (Game Boy Advanced System)
Where: Discovered in the dryer (which meant it also went through the washer)
Duration: One medium-sized wash and dry
I really don't know what any of it means, but empirical research like this doesn't come along every day. You're welcome.