Extremely rude!! Since Olivia still has the hammer he's going to deliberately squint at her, stuff the etch-a-sketch back in his pocket, and start moving another railroad tie into place.

He grips the rail with both hands first, giving the track a hard pull to get it into place. Then he lines up the tie with the hole, grabbing a nearby spike and putting it into position. Hammer away, Olivia!

Also probably lead the conversation because Ten's in a huff about being plagiarized, at least for now.