Penny is initially stunned by the discovery, though can't help but grow aroused and horny at the thought of Nathan using the stroker on himself. She muses aloud that she has a bit of time to herself, and starts masturbating while imagining Nathan using the toy. Penny gets so worked up that she calls out Nathan's name while pleasuring herself... and gets caught in the act when Nathan unexpectedly shows up!
Nathan sheepishly explains that he forgot something and came back to get it. He left Penny's teen at the mall and was going to head straight back, but after seeing THIS... maybe he should... stay behind for a bit. Nathan says that he heard Penny calling out his name, and offers to show her how he ACTUALLY uses the stroker. Penny agrees on the condition that he keeps this whole thing a secret, and they have energetic sex including using the stroker!