*The tip of the orca's member begins to leak pre steadily, slowly getting more and more in there, as well as begin to lube the passage with its warm slick juices.  He moans a little and closes his eyes tightly while he humps into the tight passage of the human, keeping him close to his body, and not wanting to ever let go for some reason.  His ball sca begins to fill with seed, and he's almost to the point of climax*