Jon could see as he was plunged into Dave's wife, enclosing him in darkness and moisture. He tasted her fluids, and could smell her musky odor.
Then he was pulled out from her slit except for his head and face, only to be plunged in again and again. He could hear the couple moaning. Finally, a pressure rose in his throat, which increased until his cock body pulsed as cum shot out of his mouth and into the wife's slit. Jon continued to pulse for several seconds until finally he stopped.
His entire body was slick and stiff, lying in the wife's vagina. He remained there for a couple minutes until Dave pulled him out as he became flaccid. Jon flopped around as Dave got up to get showered. He bounced against Dave's balls repeatedly as Dave turned on the shower and began washing himself. This included scrubbing Jon's cock body repeatedly, making him stiffen slightly again.
Finally Dave stopped showering, dried himself and Jon off, and got dressed, enclosing Jon in darkness again and pressing him against Dave's thigh.