The anal experiment - Was this fuck too extreme?

I'm really into unusual sex and I love trying out new things - like this time again :) We went shopping and I discovered this bottle cleaner. You can describe it as a fat silicone brush and when I was packing it up, my fuckbuddy asked me why I was making such ambiguous movements with it ?! I didn't know what he wanted from me but then I realised it myself. That's when we had the idea of using it during sex. At home we tried it out straight away. It was built into our 3 hole fuck. First my pussy was fucked and then the part was inserted and then we continued with anal sex. It felt really good in my pussy and when he stuck his cock in, I almost came. But we still really wanted to try anal and so he stuck his cock deep into my arse. He stretched it properly before using the silicone brush again. We inserted it all the way in and it was just intense. The nubs brought me to anal orgasm so quickly - amazing!!!