"You seriously want to stand here, ask questions, and be hit by fish knives?" At least the next object the conveyor belt pelts them with is simply a California roll, but there's more where that came from. Murderbot is going to make an attempt to stop it by shooting the belt, though.

That counts as an answer to 'what is that on your arm?', right? The red beam pew-pews out, striking the belt but not stopping it.