Rub her ass?

Carl gets a bit more ambitious. He squirts some moisturisers at the top of Steffi's butt. He starts rubbing it into her butt. He realises this is staining her panties and so shuffles them down and really goes to work on her butt cheeks.

Steffi is getting slightly uncomfortable with the direction of the massage, and squirms slightly as Carl thrusts his cock against her whilst he does this.

Carl feels his balls begin to boil as he rubs harder against Steffi.