Top Definition
A young boy who is obsessed with lego and can recall any lego figure or part from memory. They can also talk about lego for hours as it is the most exciting and interesting topic in the world to them. They have great delight in designing their own lego minifigs and older boys often video them and make documentaries which they then upload to YouTube.
Timmy: "Have you seen Sam's lego collection, he has an entire closet with draws full of lego all sorted by color and size!"
Seth: "Yes, he is such a Lego Nerd!"
by the real Mrs B June 06, 2010

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