This is classic Seinfeld. Although the idea that Kramer could get a business school student as a work experience intern stretches believability by more than a tad, the jokes and performances in The Voice are sufficiently in sync enough to make this a more than memorable episode.
The title of the episode refers to the fact that Jerry has to pick between going out with a beautiful woman and doing an impression of her stomach to amuse his friends, a plotline that seems more typical of older episodes of Seinfeld than later ones, but is all the more welcome for it.
It is George who gets all the best lines though, none of which I shall give away. Go and watch this episode, it is superb.