Really? I've noticed that Nikki's titty fucks are always a bit awkward. Her implants are really round and firm so most of the time when a guy fucks them his cock keeps popping out of her cleavage and she has to sort of tent her hands over them to keep it in there. It's not like girls with big naturals or soft implants where the skin forms a tight sheath. I love Nikki (and her tits) but titfucking isn't her biggest strength.