The abrupt shift from the other teenager is so sudden and unexpected that Donatello stares, stunned as though Dustin's gone Mister Hyde on him. He is completely unused to this sort of thing, connecting with a fellow science enthusiast only to have that cordiality suddenly ripped away like a rug pulled from under him.

"Wha..?" He tries to kickstart himself out of the stall of a shock, taking a step back like he expects the next thing Dustin might do would be to attack for no reason. The guy certainly looks agitated enough.

"-too soon? I know, new kid on the block, first time on an alien planet and the first thing I jump on is tech-talk. Guess I kinda got over-eager there, I've never got to talk with other people about tech like this before. Usually it's more of a...me thing," he admits, almost looking disappointed. He's not too sure where to go with this.