Usually at the gym after having a shower half hard on not worried about other guys looking. My friend at the gym sometimes says that my girlfriend must be well satisfied
Never had an erection in an inappropriate place. If it happened the cause was appropriate. Where I was or am at the time doesn't matter because if there is enough stimulation to cause my cock to become erect that is what is going to happen. I don't hide it as it is a natural function of the male body. I have a very high libido. Erections happen often and without warning. I refuse go around hiding my erections every time so I just let it go. If my erection grows to where it is uncomfortable I adjust my cock for comfort and go on.
Visiting my wifes sisters. She sleeps with her door wide open,and is a VERY light sleeper. Went to the bathroom early one morning ,passing by her door completely naked with a huge erection,and I paused in front of her open door.She had to see me
In the shower at the gym, made the mirror thinking about this gorgeous woman working out there or showing off there. I'm hard as a rock, I turn around and another guy is there, sees my cock and smiles. He starts stroking his, I gave into the situation and did the same. We both came hard two minutes later. We got dressed and struck up a conversation which led to a couple of beers down the street. Eventually a threesome with his wife.
I am very pleased to disqualify you from this category after reading you were invited to meet for a threesome. I could say it was a very appropriate place and time
I am an exhibitionist so get hard often when I am naked in front of others. Lucky for me people there don't seem to mind, and sometimes comment about it in a good way, lol.
I have erections all the time, often in places where it's not appropriate. shops, office, funerals, plane, doctors office, etc. Name a place and I had an erection there probably
I was showing some holiday photos to a work colleague on my phone and swiped one photo too far forgetting I had a full nude / full mast photo ♂️
I have had them a couple of times at the doctor's, most embarrassing I think was in school in the showers, though a few guys seemed to get them, I still get Hard-Ons in public showers today and in changing rooms. I thought about a foreskin piercing but I think I would end up rock hard. I did go to a parlor to get it once but didn't as the piercer was a woman and while being hard or masturbating Infront of people I didn't think she would be to happy with a guy with a boner on the bed.
The worst you can do is ask and get turned away. Also I would think it depends how you ask and what you say; being decent and respectful despite of something natural.