CA: Well, first, I think if it was an actual father / son situation, it wouldn't be as poshut as anyone might think. So many emotions: fear, resentment, embarrassment, you name it. So I'm not so sure it would be so simple as a "Kodak moment" for either of them.
As to it being a neighbor or something, I'm not sure but I think the factor of being anonymous on this site might be called into question. At least in my town, I could probably decipher any Yid in a couple of phone calls or emails. It wouldn't take much (whether intentional or accidental) for someone to give away one too many detail and blow their cover. Plus, there's always the certainty of running into them someplace.
I don't think I was thinking of any specific case
as much as seeing how the younger ones (no offense intended) seem to leave their hometown, their age, their yeshiva status, and enough detail that anyone might suspect them. Even their own father if he were ever to arrive here. If my father ztl or wife amush or anyone near to me saw my whole thread, they'd know who I was in an Out-of-Town-Minute.
Just a thought, particularly for the more youthful ones, as we work in this supposed anonymity. Oh, wait: is that your father over there in the newbie corner right now ;D ?