Someone who on the Xbox 360 or Playstation 3 game FIFA 10; the world famous soccer game, repeatedly plays as the team Chelsea in online ranked matches in order to use the player Frank Lampard. This player has been programmed with the ability to strike the ball incredibly powerful and accurate from long range distances, and although this is certainly true in real life as he is known for his long shots, the extent of these abilities shown in the game is somewhat unrealistic. Many FIFA players often choose to be the team Chelsea simply in order to repeatedly shoot with Lampard, and often score as is the case. This annoying feature within the game has lead to the creation of the phrase "Lampard Whore", which although could be deemed an insult, is not necessarily offensive, it simply refers to someone who excessivley picks Chelsea and shoots with Frank Lampard.
For example, You are playing FIFA 10 as AC Milan, a good solid team, but after 15 mins of gametime your 3-0 down as a result of the opposite player having chosen Chelsea and scored outside the penalty box with Lampard 3 times in a row. This is when you shout "F**k this you Lampard Whore" down the 360 microphone and quit the game.
Hence "Lampard Whore"