Okay, I got this gif from hiddlestonr, so if it’s your gif I give you full credit and I hope you don’t mind me borrowing it. I just didn’t want to dump my feels all over the original post.
This scene was funny, granted, but I get all kinds of emotional over it. Because Quicksilver is cradling Erik’s head, his forearm lined up along Erik’s spine so that he’s protected. Which makes sense, but it also means that Pietro is holding his father’s head, and very possibly his life (speeds like that whiplash could be deadly I imagine), just the way Erik would have if he’d been around when Pietro was born.
Pietro is, quite possibly, cradling the very life from which he came and he’s not even aware.