Trial isn't a word that ever has good associations for Lambert, and what happens next has little reason to change that opinion. He claps his hands over his ears at the sudden blast of sound, squinting to see what the hell Sans just unleashed. It's not as threatening as he expected it to be, for all the ruckus it had caused, but he doubts that noise went unnoticed.

Shut it up! he says-- or tries to, anyway. Since his own ears are still ringing hard enough he can't really hear anything else, he has no idea if his voice is coming out the way it should.