After hearing the Schiff parody, my thought was that if you were on some nifty drugs...hearing this from some office co-worker, you might be doped-up enough to play this as some part of reality (when it wasn’t). I think the guy is on some form of medication, and just lost control of his thought process.
Maybe if he gets under some stress there in the senate chamber, you might get the right conditions where he launches into another parody moment, and Justice Roberts asks for a recess while he tries to figure out what to do with a heavily medicated Schiff.