Do you jack off watching ?

I´m hardly allowed to watch and then it is forbidded. However, I love jerking off while listening to them, if I´m not caged.
I love just listening,my imagination takes me to some really hot places. I listen to her moaning with pleasure knowing I was never able to pleasure her like that.I picture in my mind how he is giving her toe curling orgasms like only a real man can and realize that I only deserve to lick up his mess from her satisified pussy.
 
Watching your gal have sex, do you jack off ? Cum ? Do they watch? Do they even notice?
We enjoy some good sex fun with a guy we know, him and I really enjoy watching as well as taking a turn.
I am usually rock hard watching them together. I get so turned on its hard not to touch myself. One night I was enjoying the show, slowly pumping my dick, she was REALLY into how he was pumping her, she said "this feels so good". Instant cum for me, I shot about six inches high. They didn't notice. Another night just about the same deal but they both saw me, talk about embarrassing. Different time, I'm doing her, he's next to us on the bed slowly jacking off. Wife asks him to jack off and cum, he says he's too embarrassed. Her and I stop, she sits up and starts to beat him off. He shot 5 or 6 BIG squirts way high. It was hot to say the least. We got back to fucking and I lasted about 20 seconds.
Every time I jack off and struggle to stop from blowing