My experience isnt about using a huge strap-on my GF. But its close enough.
One night we were watching a porn where this gal was getting nailed by a guy with a huge cock. She kept screaming how big he was and he was hitting her G-spot as he was doing her. She squirted as she orgasmed at the end. (what a surprise, right) My GF commented she'd never had a g-spot orgasm before. We have a few g-spot toys. But they didnt do the trick for her.
The porno gave me an idea, though. I went online and found the oxball cock sleeves. I ordered one along with the insert. I didnt tell her as I wanted to surprise her with it.
The following weekend, as I had her all tied up and blindfolded (thank you 50 Shades) I put it on. Even though she was already soaking wet, I made sure to put lots of lube in her pussy before starting. For an added kick put a ribbed rubber over the sleeve and put lots of lube on it too.
She kept asking me what was I going to do to her. All I told her was to relax and enjoy. When I put the head against her pussy, she jumped. She kept telling me it wouldnt go in her, its too big, it wont fit. I just went really, really, really slow, pressing the head against her pussy. The whole time I was telling her to relax, it will go in, she'll love it. When I finally popped the head in her pussy, she came instantly. As I slid the rest in, I went even slower still.
She just shuddered moaned, groaned, screamed with pleasure.
sounding like the gal on the porn movie. It only took just a few very slow strokes with it before she had her first full blown G-spot orgasm. Squirting and all.
When I took off the blindfold and she saw it for the first time her eyes nearly popped out. She said "omg that thing is huge! I cant believe you just fucked me with that! But it felt so fucking good in my pussy! I never came like that." Then she saw just how much she squirted from it. "fuck me again with it!" She told me. So I did. Slowly of course.
We dont use it all the time. Only on special occasions or if shes really horny.
I like it because it lets me fuck her for as long as I want. (Without using the blue pill). Especially when I have her all tied up. She can only handle very slow strokes. So I just cant pound her with it. I still can somewhat feel her as I'm wearing it. Not to mention I use it as a condom and can cum all I want inside of it. I get to send her back home fully orgasmed out.
My GF gets her G-spot orgasm out of it and multiple Os. Loves how it fills up her pussy and that I can do her for a long time. Plus it lets us playout a few fantasies as well.
sorry for the long post.