"Yes, mistress" said Brendan. He had no desire to disobey Vipress.
Vipress pushed Brendan onto his back in the bed. She would be on top, in her rightful place as the dominant partner. She rubbed herself against Brendan's leg and flicked her tongue across his face. They inched closer to copulation when Vipress suddenly had an idea.
"The spray" she hissed. "Get the spray."
"Yes, mistress". Brendan slid toward the edge of the bed and grabbed the bottle from the floor, thankful it was close by.
"Remove the spray nozzle." Brendan obeyed.
"I think I can maximize the liquid's effect." She rolled to lay beside Brendan in the bed. "Pour half of what remains into me."
Brendan went to pour the bottle into her mouth. She swung her unfinished arm at him, as if it slap him. "Not there you fool. Lower! Let in lubricate things..."
Brendan stared dumbfounded for a moment then realized what she meant. He poured half of what remained in the bottle into Vipress' slit. Some dribbled around the edges.
Vipress squirmed with pleasure. "Yes, it feels good."
Brendan couldn't resist. He licked at the liquid that dribbled down Vipress' side. His tongue followed the trail of pink liquid to it's source. The liquid had a strange and indescribeable taste. Brendan's tongue probed Vipress' slit and she moaned with pleasure. He could also taste something else, what he was sure were her snakey juices.
"Yesssssssssss..." she moaned.
Brendan was astride Vipress' snake tail, his member growing rock hard as it rubbed against her tail. Suddenly, Vipress rolled over, putting Brendan on his back. He barely managed to cap the end of the bottle with his thumb to prevent it from spilling on the floor. Vipress rose up above Brendan, showing her power and majesty.
"Now use the rest on yourself".
Brendan poured the remainder of the bottle on his crotch as commanded and tossed the empty bottle aside. Vipress leaned in to lick up the liquid that tried to drip from Brendan's body to the bed. Then her long flexible tongue teased his member. She was careful not to lick off much of the liquid. She could feel the liquid that had been poured into her. She hoped that more directly combining the sex and the pink liquid from the lab would would complete things as she wished.
Without warning she lunged forward and impaled herself upon Brendan's rock hard member, riding him to the climax she desired.