Maybe it's one of those pants with a flap on the backside? I mean, Santa is damn busy that one night a year, so I'd guess he would jump on anything that can save him even a tiny bit of time.

> What's most impressive is how Santa can apparently shit through his pants, considering how he didn't have to take them down.

He's a Sim.

He can deliver billions of toys around the world in one fucking night, so yeah, he can definitely shit through his magic pants