Oh, dear: it looks like vomiting Canadian pop star Justin Bieber had some "personal footage" stolen by unknown thieves. What kind of footage would that be, hmm?
Based on these tweets, it sounds like Bieber had both a computer and a camera stolen (apparently his tour manager was a victim too). Between the two items, there was "a lot of personal footage":
It's hard to think of a document of as much magnitude as the fabled Justin Bieber Sex Tape — the Pentagon Papers, maybe? — and it seems unlikely that Bieber would be stupid enough to tweet about it if it existed.
However! As proud sex-tape journalists we'd be shirking our duties if we didn't ask. Know anything about a Justin Bieber sex tape? Email me at firstname.lastname@example.org.