The original gravity-defying nude ink pen collection finally gets its hour on the iPhone.

What can you get nowadays for two dollars? The Novelty Erotic Pen Museum thinks it has the answer: over one-hundred and sixty classic novelty pens from their archives have been meticulously photographed, featuring statuesque models in the nude and in all stages of immodest seventies attire. Choose from a virtual plethora of brunettes, blondes and ginger-haired honeys. Tip your iPhone, iPod Touch or iPad upside down to witness your sexy lady’s clothing miraculously vanish.

Disclaimer: since the app does not exhibit a capacity to write on external objects with actual or synthetic ink, calling it a pen may be overstating its endowments.