You're effective, but...

An opportunity to attack! As you go in for the kill, you lean your body to the side slightly, trying to make it look subtle and unintentional. But in reality, it's anything but, and you achieve your goal of blocking his view long enough to get through his defences and knock him back.

When you move, however, is when you really notice just what it is you're feeling in your lower regions. You're clad in nothing but a thin pair of panties, and are sat in his boxer-clad lap. And he. Is. Hard!

As you lean your upper body from side to side, your hips tilt as well. Your pussy is effectively grinding from side to side on his dick, and after a while you have to hold your breath to suppress yourself from moaning aloud.

You shake your head. Pay it no mind! Just attack!