Grandeeney Marvell: glad you liked Moira's superpowers ;)
Now, a bit of someone new. I really like Peter and sometimes watch the two "running" scenes on YT just for the sheer fun he's having despite the very serious situation he's in. And the one in DOFP where the guys come to fetch him, too.

Peter, Embarassed

He had to admit he had been pussyfooting around. He had managed to make at least three different plans per day, detailing how, where, when and in exactly what words he Would Tell Erik. None of them ever came to fruition, either because of presence of others, or because Peter found himself mute once the presence of others was removed.

It was an unpleasant sensation, that lack of words and inability to push the sound out - he had never felt that conflicted about anything since his mutation had started showing. In his quick state he thought faster than the people around him - he had to, to analyse the trajectories of objects and consider what and how he was potentially affecting, but that never took much more of his brainpower than average person used when rollerskating in a crowd. That left a lot of said brainpower - running at top speed possible - to consider all angles and options.

Still, he came up with nothing once faced with his father.

At the end, it was Jean who did it, quite by accident. He couldn't even be angry at her. He definitely deserved the "fullnaming" as the kids called it.

"Secondnaming" was something Professor applied to Scott and Alex, when they were being idiots. Cold "Alexander Christopher, let go of your brother this instant" or "Scott Thomas, get off that roof right now" worked much better than plain single name.

Some of them earned themselves a fullnaming and there was that day when everyone learned that Raven's second name was, in fact, Patricia, for some unfanthomable reason.

"Raven Patricia Darkholme! I'll have your blue hide if I find that you ate in the library one more time!"

Raven looked at Charles with reproach.

"Really? Fullnaming, just because of this?"

"Because of the mayo!"

"Ouch" she grimaced guiltily. "Yeah, that might have been a mistake."

"Over. My. Desk. All. Over. My. Desk!"

Everyone winced.

Raven sighed, got up and fetched a rag from the sink.

"All right, all right..."

So it shouldn't have come as a surprise that Peter got himself fullnamed at some point. Actually, the surprising part was that it hadn't happened earlier. Also, the fact that it was Jean was expected. She took to mimicking the Professor's methods, especially in the view of Moira's absence and Charles' unavailability.

Also, she was one of the limited group of people who actually cared what happened to Peter Matthew Maximoff.

And that was what she said after he attempted to actually run up a tree one day.

In retrospective, he should have expected this, because running up things like trees was not exactly what his mutation helped with, but he thought it would be an interesting experiment to make. At least that was his explanation for Jean, when she finally had to take a breath and made a break in scolding him for being an idiot and a bad example to the kids ('and Scott!' she added quietly, shooting a glance towards the younger boy).

Her face said plainly she was unimpressed with his reasoning. She added a very coldly voiced threat to call his mother and ask her for a second opinion, if he was unhappy with Jean's interpretation of the situation.

Erik's face was a completely different story.

Later, Scott said that "Magneto looked as if someone had hit him with a brick" and Kurt said something long and descriptive in German, making some additional wide gestures.

Anyway, that was the way the mighty Erik Lehnsherr learnt that the annoying non-student was the son of Marya Maximoff. Which, after certain simple calculations, led him to a quick conclusion that said annoying individual, namely Peter Matthew Maximoff, was his son, too.

Peter acknowledged later to his Jean that he should have dealt with that long before, but really, who just comes up to the most powerful mutant on the playground and tells him that he's a father of a grownup son? Considering the man's recent loss of a family? Peter might have agreed that he was being a bit stupid about it, but starting a familial relationship with a long-lost parent was probably better done if said parent wasn't quite so bruised emotionally.

So. In the end, it all happened without his direct participation. Or at least not the kind he had been planning.

And now Peter had to honestly admit that was being very, very skittish around Erik yet again.

Because even though there was no person on Earth that could catch up with Peter - including Jean - there was definitely someone who could stop him, at least as long as Peter didn't decide to ditch the steel-studded leather jacket.

And considering the looks Erik sometimes threw his way, he was readying himself for a little talk with Peter.

Peter could only hope it was not going to be about birds and bees because he had already learnt from Hank's biology textbooks that some of these creatures were up to some seriously weird shit.

Late edit with explanation: I have no idea if Raven even has a second name, but I really wanted to give her some more common name here. Just to make sure Charles has something to use when shouting at her :)