Bob put his arm around his wife's waist and squeezed. "C'mon girl, you've gottta decide!"

Emma gazed out of the plate-glass window of the lounge, surveying the various contraptions and considering their destructive potential. "I can't, Bob. All your machines are so yummy."

It was understandable, thought Bob. Already there were quite a few, and most were untested except a couple that had been tried with sheep carcasses, and one with a foal that died early.

Emma always complained about that, saying it would be more fun to use live ones, but Bob wouldn't have it, saying that it was wrong to treat innocent animals that way. People were another matter he said. Something to do with original sin.

"But I'm too horny to think properly," Emma lamented seductively, as she rubbed a hand between Bob's legs. "Maybe we can have a quickie first, and decide later."

Bob didn't need much encouragement. "I nearly came just checking those girls over, especially the brown one. Amazing little booty."

"True," agreed Emma. "Hey, why don't we drag her up here and let her join the fun?"

Maisie squealed and cried all the way as they dragged her up to the lounge. Then they roughly stripped her of her pyjamas and Bob pushed her onto the bed. Maisie just lay on her back, sprawled across the width of the mattress, and continued to sob, her sad eyes filled with tears.

"Jesus, is she never going to shut the fuck up?" groaned Emma, "the noise is doing my head in!"

Bob said nothing, and proceeded to check their new playmate for suitability, probing with a finger into the girl's slit, which elicited a welcome moment of shocked silence from her.

Emma looked to her husband and raised an eyebrow. "And?"

"Meh, I'd only be able to get halfway in."

"Tell you what then, Bob," she suggested gleefully, as she produced a large serrated kitchen knife, "You fuck her ass while I saw her head off. I never sawed a girl's head off before. I bet it's amazing! I'll do it slowly at first, and then really go at it when you wanna nut. Just imagine!"

Bob knew that for Emma, such a thing was probably better than sex. "So keen!" he laughed, "But she'll be more fun later with that pretty head still attached."

"Oh come on spoil sport! Just a little bit!"

"Nah, it'll soak the mattress. You can chop her up downstairs later."

Maisie decided she didn't like the idea of getting chopped, or even having her head sawn off 'just a little bit'. Wailing for her mummy, she struggled to her knees, kneeling on the bed.

This gave Emma the excuse she had been looking for, and she slammed a frustrated fist into Maisie's soft guts and the girl folded face down on the mattress, leaving her butt proud in the air and head buried in the duvet.

Emma sighed happily. "Well that's shut her up."

Bob said nothing. He was already fumbling with the Velcro at his fly and his eyes were firmly fixed on that provocatively presented brown booty.

Emma recognised that look and realised that she'd have to move fast if she was to get a piece of the action. "Okay, You're right. I guess we can share instead. But you know the bed's gonna get wet anyway."

She reached into a bedside drawer and with a cruel smile, retrieved a double ender. "It won't matter so much for me if she's tight, it'll just make her squeal more," she laughed.

Bob chuckled. "And wriggle."