6 years late… but yes it’s possible, i’ve done it at least twice and i’m MALE so it is possible!
I’m fairly new on this site. I see the last comment hasn’t been for a number of years but I am going to post my experience and see if I can get some women to comment. I think you can have an orgasm without physical stimulation. If I am out in public and have a dress or skirt and nylon stockings and a garter belt on I will get very aroused if I cross my legs and notice men are looking at my legs. I feel my vaginal muscles tightening especially if I squeeze my thighs together. It feels so good. I think it could be that someone is seeing something they shouldn’t and it feels a little naughty to be exposing my stocking tops and garter straps. It only lasts a minute or two but it’s very pleasurable. Hopefully some women or men can comment and give me your thoughts if this could be an orgasm or just a great feeling.