Add your own special piece of furniture.

You can't let her make all the decisions and order one final piece of furniture from your favorite online store. It takes over a month to arrive, but a large crate finally gets delivered to the apartment. Appropriately named the 'Bitch Blaster', this terrifying high-speed fuck-machine comes with a metal stockade complete with wrist, ankle, and neck restraints to tie her on all fours. Capable of two hundred and fifty thrusts per minute with various dildo attachments to the shaft, it can be remote controlled through your smartphone. Gemma looks in trepidation as you unpack it, and its looks every bit as expensive as it cost. You're impressed by the sheer engineering of the thing, although with the amount of use it's going to get it needs to be as heavy-duty as possible.

Once it's finally set up in the bedroom, you make Gemma strip off and climb onto the stockade. You bind her tight with the restraints, cutting off her circulation, before lining up the fuck-machine with her dripping pussy. The room fills with her moans as you turn it on, the shaft pistoning into her with rhythmic precision. You're surprised at how quiet the machine is, even once you ramp it up to full speed and it is jackhammering into her at a rate that no human could possibly perform. Her entire body constricts as she starts cumming hard, and you jam a gag into her mouth within the first few seconds of her screaming so that none of your new neighbors are alerted. An explosive chain of orgasms rocks her as the unrelenting fuck-machine blasts her pussy aggressively, splattering her cum all over the stockade and onto the carpet.