When a straight identifying man watches so much sissy porn, that he slowly begins to grow a lust for cock. The specific moment of this inception is called cockception.
Josh didn't realize that watching 10000 hours of sissy porn would induce cockception.
n. when you are pretty sure that the ratty, smelly, stain-covered couch that you got from a yard sale or found left out on the curb was the true culprit in getting some random girl pregnant, instead of your own fertile loins.