That's what they said. That I show up with some codename, Agent J, and we fight Stand users. Apparently I have some flashy thing that makes people forget things.

[He says this deadpan, betraying that he doesn't actually believe it, but at the same time with none of the innate humor that would suggest he actually understands that this is the plot of a movie and not just an outlandish story.]

Seemed pretty plausible in the beginning, except for maybe the flashy thing.