You go to the ballet and you see girls dancing on their tiptoes.

Related:

• Skinner: Heh heh, there's only one class left, but it happens to be the coolest one of all.
  Bart: Ballet? Dancing is for girls. Skinner: Well...
• You know, a lot of girls go out with me just to further their careers.
  damn anthropologists. -- Emo...
• Bart: See that? I started to do, like, a little arabesque,
  but then I just fully went for it and pulled...
• Dancing is wonderful training for girls;
  it's the first way you learn to guess what a man is...
• You may be redneck...
  if you go to family reunions to pick up girls...
• Fat-bottomed girls,
  you make the rockin' world go 'round...
• If you run across a restaurant where you often see priests eating with priests,
  or sporting girls with sporting girls, you may be confident...
• You know you lead a sad life when the girls who get
  around never get around to you...
• Outside the backstreet girls are dancing to music that
  the D.J.'s play...