Pete would have rankled at the old guy bit, but he wasn't exactly young. Throughout the course of his life, it was debatable if he ever was young, due in large part to the many things he had done or had borne witness to.
Then there was the whole other matter of time travel and other dimensions, which Pete knew was possible. Even Captain Britain used to have slips in time where he saw things unfolding. At times like this, it was better to simply pinch the bridge of one's nose, draw in as much of a breath as his lungs would allow after years of smoking, and - figuratively - embrace the weird. It couldn't be literal, even if weird was something tangible. That's because Pete would much rather kick the weird in the bollocks, than bother giving it a hug.
"Too right, it's dangerous," agreed Pete, without skipping a beat. "You might go back in time and trod in the wrong pile of dinosaur shite, where some newly brewed bacteria's been forming. Then pop back to your own time, an' find everyone's got three teeth an' a unibrow."