When do you "show cards" with no showdown?

[quirkasaurus]

If ever?

For me -- there's one time I'll show.... and that's if I've
been getting clobbered by the deck and won 4 of 5 hands in
a row, something like that, with no showdowns.

After the last one, I'll tend to show the hand, just to
cement the luckbox image for later bluffs.

rarely, if ever, do i show bluffs.

what about you all?