Someone with limited co-ordination of their feet in a sporting context, usually whilst playing football (soccer). Inability to control the ball can lead to this insult being used, as will inaccurate wayward shooting and disgraceful yet clumsy scything tackles. Feet can also be unusually large or misshapen, like melons, or breeze blocks.
Clyde : Don't pass to that bell end, he'll just spunk it over the bar. He's such a boubadoop foot.