I'm doing a little experiment.
There's a video on YouTube that has had its content labeled as mature so that underaged viewers can't watch it.
The video is CGI footage of "superdeformed" (oddly proportioned in a childlike way) Gundams fighting with each other from a crossover video game.
The reason it's blocked is apparently to prevent underaged viewers from making troll spam comments on the fact that a character from G Gundam (the goofy, silly Gundam series-in fact, the character is Master Asia, who fights Gundams with his bare hands) is beating up characters from one of the serious series, and indeed, it's the only G Gundam video on YouTube that doesn't have at least one super-stupid troll comment on the first page.
Anyway, that's got nothing to do with this post. I just want to see if mature-rated videos that have been embedded can be watched by somebody who's not logged in. (EDIT: Turns out you can watch an embedded video while not logged in even if it's been flagged mature! ...I don't know why it took me this long to try this deliberately.)