So, funny story.
On Sunday I went out to run some errands with the family. I took my DS and copies of Pokemon Diamond and Platinum to collect the Jirachi download at the Gamestop in that area with my little cousin. On the way home I called one of my coworkers who said he could cut my hair, so I took the fam home, dropped off my DS, but I left my copy of Diamond in my pocket. I get the hair cut and drop the pants I was wearing off to get washed.
My pants got washed and dried.
I just found the copy of Diamond in my pocket like five minutes ago.
IT STILL WORKS. Not a single bit of data lost or corrupted.
FUCK Nintendo knows how to make a game cartridge.