Fuck while you're both tied up!

Well, I don't have to ask you to hold still if you're like this.

Neither of you can move like this! Well, that's not entirely true. You can move your hips just enough to give her a good fucking. You wiggle a bit, trying to get your cock into just the right angle to penetrate her. Finally, you manage to slide right inside her, moaning as the restraints rub against your skin and your cock rubs against her inner walls.