A system for getting a woman to preform various sexual acts on you. It is initiated by a woman complementing a part of your body such as your hairstyle. This should immediately be followed by "whipping it out". The 1-2 punch may sometimes be considered sexual harassment or public indecency.
Girl: Hey, your hair looks nice today.
You: If you like that, then check this out.
*You whip it out
You: The 1-2 Punch: works every time.