At one point, a Japanese user from an unidentified movie theater group on social media stated that he allegedly went to a cinema at one point to watch a movie, and before it begun he saw a Dragon Ball Super-themed movie policy trailer that starred Goku, Vegeta, Gohan, Piccolo, Lord Beerus, Whis, the Pilaf gang, and Buu (though he didn't state whether if Mr. Satan was in the trailer as well). It was a humorous policy trailer on rules at a movie theater (such as no talking, no chewing loudly, etc.) as the characters sit down to watch the movie that's being played (they never show it). The trailer reportedly may have been shown around the same time as the release of Dragon Ball Z: Resurrection F, although the user watched it shown way after release, so it was likely non-promotional. There was a short debate on whether he was bluffing or making everything up, as nobody else remembered seeing something like that (though a close buddy of him did swear he's actually seen it as well). It's currently undecided if this should be debunked or if there's a possibility that this policy trailer does indeed exist.
This is the user's full detail about what happens in the trailer (in Japanese):

And this is the complete rough translation (done it with Google, and edited some typos):
- So the policy trailer begins with a shot of people queuing for tickets outside a movie theater. Once inside, Goku and Vegeta walk over to find a seat. Vegeta doesn't have anything, but Goku has a bucket of popcorn, a candy bar, and a cup of soft drink. While walking to the aisle to sit down, Son Goku accidentally steps on someone's foot and says he's sorry. He also spilled some popcorn on the way. Finally he and Vegeta take their seats.
- Lord Beerus and Whis then enter the theater and sit in the same aisle as Goku and Vegeta. Son Gohan and Piccolo also enter and sit a few rows behind the other characters. Vegeta starts to get very annoyed as Son Goku starts eating popcorn loudly. He says something like, "Damn it, Kakarot! Stop it!" Son Goku exclaims, "What? It's just popcorn! It's the best thing in the movie theater!" Vegeta replies, "You're munching loudly! Can you please be quiet?" Goku reaches for the bucket and tries to give some popcorn to Vegeta, but Vegeta groans and turns away.
- Pilaf and his gang then enter the movie theater and try to find Son Goku. However, halfway through, a film crew stopped them, asked how old they were, and asked Mai where her parents were (as they were still young). Mai yelled, "Hey! We're busy with work here!" The crew members then tell them that they are too young for this movie (which may be rated R15+) and ask them to leave. Pilaf then shouted out, "Listen you bastard, we're much older than you think, so why don't you just get out of the way or we'll stop this whole thing!". They are then escorted out by security guards.
- We now focus on Lord Beerus and Whis, who begins sipping his drink through a straw. Beerus asks Whis, "Why don't you save it?" Whis then replies, "Sorry, Lord, I just can't stop drinking this wonderful drink!" He continued to sip, which irritated Beerus even more, until he yelled, "Stop that sipping right now, or I'll-" Everyone in the movie theater shushed him. Then Whis, if I remember correctly, said, "I think this is a quiet place, so please don't make any more noise again." Whis continues to sip some more and Beerus gets irritated again.
- At last everything seems resolved and the film crew begins to close the door when suddenly Boo barges in with everything in his arms. Lots of popcorn buckets, candy bars and cups! This surprises everyone in the movie theater. Boo starts spilling popcorn and drink as he tries to walk. Once he got to the aisle, the others struggled to get out of the way, and then Boo took his seat (he occupied either two or three of them) ! Several people sitting behind him nervously dispersed away to get a better look at the movie. Piccolo says to Son Gohan, "I'm surprised they let him in in the first place!" When everything is over, the room goes dark and Son Goku shouts, "The movie is finally starting!" and he gets shushed and silently mutters, "I'm sorry." When the movie screen zooms in, it says, "We hope you enjoy this feature presentation!"
- That's all!
I have no idea how he was able to remember all of this, he must've been a Dragon Ball fan and paid attention to all of the action happening! Again, this seems to be non-existent, but I highly doubt that it is. I wonder where this could be found?