I shat myself yesterday
Are you serious? What happened to cause you to soil yourself?
I just felt like it after I'd gone to the bathroom in the dorm.
If you feel that you are going to have a bodily function, it is best to find the nearest restroom when possible instead of making a mess on yourself. It is rude to those around you, and unhygienic.
But it was kind of like a game to me.
That doesn't sound like a very fun game to me. Purposely soiling yourself isn't a good thing to do because it will make everyone around you feel uncomfortable.