Seeing this, I wonder why I haven't seen it before, honestly. Girls like vampires, right? Yeah! Girls use tampons! Tampons gather blood, man the ad is obvious. ;)

Larger image here (as if you'd need a closeup)

Advertised brand: o.b. Tampons Advert titles: Vampire Headline and copy text: Very absorbent. Advertising Agency (Name, City, Country): Draftfcb/Lowe Group, Zurich, Switzerland Agency website: Executive Creative Director: Daniel Comte Art Director: Sebastian Hugelshofer Copywriter: Ivan Madeo Photographer: Sandro Diener 3D-Art: Graphics: Claudia Gaisser Account Supervisors: Rolf Jeger, René Kaiser Launch (Month, Year): March 2009