There's a small group who meet pretty regularly near me (in the S of England) where something similar occurs.
More soft-swing than Jack and Jill though.
I've been twice and found it really horny.

I wonder how many sisters "help" their brothers in this way?
I know a friend of mine would sometimes play with her step-brother when they were in their early teens, but that also included letting him play with her to.
Interesting situation though.

Until recently I used to swap emails and chat via Skype and/or YM with a couple (M&F) and also another single bi-woman. (I'm bi-sexual myself.) We would send one another links to video clips or pictures that we found stimulating and sexy and of course would masturbate accordingly. For me it was ...

Mostly late in the evening. But I also like to do it on lazy week-end mornings when I have nothing special to get out of bed for. An ex b/f liked to wank off first thing in the morning, and if that was a work day I would leave him to it whilst I got myself ready for work - though I liked to watch hi...

Very occasionally I will feel the urge to do it more than once or twice in a 24hrs period. Normally however, I tend to have (short) periods when I don't really feel like it at all and then (longer) periods when I need to do it (say) 3 or 4 times a week. My most memorable occasion for multiple goes i...