Marcie noticed something really odd. There was a small protrusion coming out of the hole in the tip of alien's penis as she stroked it. Marcie was far from an expert on this but she had taken anatomy and knew this was not normal. At least not for humans. It was like a small pink tube. Marcie found it was not hard but pliable when she touched it she could see it was obviously very sensitive as Zion winced. Immediately the little tube that was out an inch or so started to pulse and go in an out until a large amount of mucous fluid spurted out all over Marcie's belly and thighs . It was very warm and then there was another one and Zion moaned and brought his arms around Marcie kissing her lips and and neck until it stopped