Dick may have mastered the art of sneaking up behind people like Batman, but he most definitely had not mastered the art of standing by impassively and looking imposing (it was hard to look imposing when you were a shorter-than-average sixteen year old), because when Ray shrieked and fell over, Dick burst out laughing.

"Oh man, sorry, I didn't..." he could barely speak for giggles "Didn't mean... to startle you..." which was technically a lie, since he had, but he still felt bad for how much he'd surprised Ray.

Once he'd finally got his laughter under control, he held out a hand to Ray to help him up.