What is it with some people's fetish to show their bluff?

[eddo31]

i will show when i think that it can put someone on tilt, either online or in a home game. this isnt very often, and most of the time i just use the auto-muck.

i bluff and show much more often live than i do online. i think the psychological effects of it live are much worse, and thus the opponent tilt factor goes up significantly.