A type of sex toy that is pregnant with nefarious purposes. Here is but one:

  1. Place the vibrating egg inside your girlfriend or adventurous boyfriend. Keep the remote control for yourself.
  2. Take your date out to a nice restaurant.
  3. During dinner, activate the egg at random intervals.
  4. Watch your date try to keep a straight face.
  5. Go home with your date and enthusiastically enjoy each other's company.

Other possibilities involve giving the remote to a stranger, or hooking it up to some sort of javascript.