Eric laughter decreases as the girls slow down their assault.  It seemed they wanted to keep him painfully aroused.  Eric feels his asshole twitching in response to the satany finger gently teasing it while his cock continued to twitch in response from the feather tickling, though it had slowed down.  Even still, it was a horribly ticklish spot for Eric and he laughed light as it was continously feathered.  "Ehehehe."  He laughed, unable to escape his torture.