Oh yeah!

You stroll over to Helene's corner and grab the strapon. It's purple, at least a foot long. You slide it on over your swimsuit and stroll back to where Helene's laying on the mat. You strip her quickly, throwing her outfit to your sister, leaving Helene in just her red MMA gloves and boots. You flip her over onto her stomach and then kneel behind her, going for doggy style to really humiliate her. Helene just groans as you pull her up to her hands and knees. You start slow, just rubbing the strapon lengthwise against the outside of her pussy; She must be something of an exhibitionist as she's wet in no time. She lets out a gutteral moan as you push into her, up to the hilt, and start fucking her. Her hips start bucking as you give her the business, and you reach forward, pulling both her arms back to get in as deep as you can. She doesn't last long under your jackhammer blows, and soon she's cumming. You can feel her body shake as it surrenders, and you keep pumping her as she cums until you release her arms and she sinks face-first to the mat.

Well - that's that; Helene lies, ass up in the air, face down. As you slide the dildo out of her, you remember her threat to fuck your ass raw. Do you want to fuck her ass or get right to riding her face?