Metal or any subgenre listened to by nerds and often written by nerds. common themes include those of the fantasy, with songs about dragons, magic, swords and quests. A recent example would be DragonForce.
Bones: Have you heard that new DragonForce song.
Adam: No its nerd metal.
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug