The act of fellatio performed on a man by a particularly attractive woman. Icee for short. Called a Business Icee to differentiate it from the slushie drink found typically at fast food restaurants and convenience stores. The use of the word "business" here should be obvious. Who doesn't like to get down to business? Called a Business Icee because Icees are almost as awesome as blow jobs.
Kenny: Dude, I just got a blue raspberry Icee. My life is awesome.
Jack: I just got a Business Icee. My life is just a tad more awesome.
Kenny: So it is. But only a tad.