Dudes, I almost wrote the words 'throbbing' and 'cock' and they were next to each other. That is a bad sign.
While, like any good red-blooded female, I like to read about things throbbing during sex. What I don't like to read is that throbbing object in question being a dick. I always think of something purplish and pimply for some reason. *shudder* (swear to god I read a fic over the last day or so that had poor Jack O'Neill's dick breakdancing from the description of how it was throbbing and jumping.)
But it could have been worse, could have been 'manhood' or 'love muscle'.