Steven nods sleepily, tugging down his underpants a little for Greg to see. The source of the weirdness seems to be the tailbone area, but Steven is incapable of seeing the exact situation - which is that he's developed about six inches of hairless tail down there, curled innocuously around his bum.

He can't quite move it yet, but he can feel the extension of his spine in a way that is hard to articulate. It mostly feels like he's got a bit of an ache in his lower back. Did he fall down...?