It is very difficult to show off my hardon.
One has to take other people into account.
For eg nude beaches, a hardon is not allways wellcome.
For me, it is mostly on here, or when me and mates were in Bangkok after work, lots of booze and bar girls around, so its kinda "natural" for my cock to be hard and on display.
Very occasionally in international.airport urinals.
Very often I am nude in front of other guys, communal showers etc, but in general that is not hardon time.
Fortunately I show of reasonably well soft, so people have an idea of what I am packing.
And of course, the grapevine.
Word gets around.
That said, a lot of people have seen me erect.