Regulus noticed what Sam was doing and to test his theory of what was going on, he picked up a pickle and two olives and stuck them into his top piece of chocolate cake. Just to see what Sam would do.

"So... this is an Einstine-Rosen Bridge situation?" He was trying to make an attempt to understand now that he understood the footing between them - copy-cat-ing aside. "Shouldn't mess with time. Some things are meant to be one-directional."