"Oh it is so sexy and horny to do that. I have on one or two occasions.
Best time was in a three. We had all fucked, sucked, kissed each other, over couple hours and were more than ready to cum. I had one lover behind me, deep in my arse, fucking deep and slow, and was facing and kissing, stroking his friend.
He reached down, put his glans against mine, then pulled his long foreskin over both his and my glans. Felt so slippery and gorgeous as he then wanked us. Soon had to cum, and filled his foreskin with cum, he cried out with pleasure and came too...both of ud now soaked.
The lover in me soon came too adding his cum.