patrick670: Hey- I was wondering how many guys having anal sex with other guys have felt their partner cum with very hard spasms of his anal ring when he came with you inside. It seems to vary from my experience. I once had a BF that whose ass spasmed like a vice about 20 times around my dick if he came with me fucking him. Yet, with some their anus just tightened up and stayed that way as they shot. Sometimes the best part of the whole thing is feeling his anus pulse as he cums.