Sneak attack!

Oh come on~ Can't you feel it?~ You wish your cock could be even half as impressive as mine, right?~

As you manage to get yourself behind your partner, you figure you can go for something naughtier, going not for her sweet ass, but to bully her and prove your cock mightier. As your cock presses against her balls and starts grinding, you can feel her tremble. A few naughty whispers about your superior girldick will surely make her pop right there on the spot~