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1 definition by -N1NJ4-

 
1.
The extreme commitment that Team Fortress 2 players feel towards the collection, exchanging, and crafting of in-game headwear.
"Ever since I got Mike TF2, he's had really bad hatlust. He even bought Alien Swarm just to get the parasite hat."
by -N1NJ4- October 16, 2011