*As you walk down the snowy forest path, someone creeps up behind you and speaks in a goofy voice.

"human, don'tcha know how to greet a new pal? turn around and shake my hand."

*When you shake Sans' hand, you notice something odd: a middle tooth and gums. Skeletons don't have gums. This is NOT Sans. He notices your expression and realizes he's caught. Speaking in perfect grammar now, he says:

"Welp, I guess the gig's up, but you're gonna have to stay quiet."