Shower Slut

Jack heard giggling coming from the bathroom where his step-sister Laurie was showering. His buddy was adamant the spanish fly/aphrodisiac/brain fog drug could be absorbed through the skin, so he spiked her shampoo with it.

Jack walked in and pulled the shower curtain back, she was embarrassed, but also giggly and horny.

She also invited him into the shower with her.