Giving itself a nip and tuck, Penthouse, with its July issue, has decided to eliminate the cheesy, back of the book sex ads. Explaining the move, Penthouse Media Group CEO Marc Bell told the New York Post, “Traditional advertisers just didn’t want to advertise with that in the back of the book. ” Yes, Marc. Good call. It is a bit difficult to concentrate on, oh, say, a car ad when distracted by all those hot dial-a-slut ads. Editorially, the magazine is going all laddie book, adding sports, music and gadget columnists. Oh, for those pre-landing strip, saline-free, mag between the mattress and the box spring days of old.