Originally Posted by 2MuchMark

If you pay attention to Guardians of the Galaxy closely, there are suggestions that Groot might be the god Yggdrasil.

And if you saw the last Guardians of the Galaxy, you would have noticed that the Stan Lee cameo this time around is him hanging out with a couple of aliens. The Aliens in this case look like "The Watchers" in the Marvel Comic Books, and Stan looks like a Watcher named Uatu.

The watchers are aliens that can see all times, all worlds, all dimensions, simultaneously. Therefore, Stan Lee's appearance in each marvel movie isn't just a cameo. It's a character.

And now you know what Megan knows, so when you meet her, you'll have something to talk about after coitus.

You're welcome!