Hand. Metal. Whirring, and headed right for his throat. The speed of the reaction coupled with Terra's own surprise over it cuts his reaction time enough that dodging is just out of the question.

Of all the reactions Terra could have expected, getting grabbed by the collar of his shirt was not one of them. Fighting his first instinct to try and dislodge that hand is going to be difficult, but for now, he's managing.

"Okay - you don't like surprises." Which means he actually has to plan what he wants to say next carefully if he doesn't want this to escalate further.