Blowing Smoke Up Her Ass

Blowing Smoke Up Her Ass (Expression) To give a gratuitous and insincere compliment.  For reasons that make absolutely no sense to me, Maggie Gyllenhaal actually sought Katie Holmes approval before taking over the Rachel Dawes character in Christopher Nolan's Batman franchise. In fact, she nearly turned down the part, until she was assured that Holmes was on board. Gyllenhaal said:  ... [link]