Years ago had a GF who was horny pretty much all of the time. At some point we had a discussion about how she took care of things when she was alone. At first she said she did nothing, but after a while admitted she would masterbate. Of course, asked for details... She finally said she had used her bedpost since she was in jr high school and would just grind on that. Asked her to show me, and after some cajoling she did, fully clothed wearing corduroy pants, start pushing herself against the footboard post on her bed. No real movement, just pressing. After a couple minutes her breathing increased, held her breath for a couple seconds and it was over. I said "that was it??" being dissapointed there were no screams of passion or anything more overt, and she said yep, that's it. Fortunately, she was much more animated when we were in bed [or wherever] together.
