Robin pulls out and puts some lube on his cock.  He pulls out the vibrator and tosses it aside.  He puts his hard cock up to her asshole and begins to slide the hard cock in.  It takes a little effort to get the head in.  He then slowly begins to work the hard cock into her tight hole.  Once he is completely buried inside, he waits, giving her time to get used to the girth.  Then he starts to slide in and out.  "You are one fine bitch."