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1.
A person who has above ankle long pants. There are a few subcategories in the term Dan pants.

Semi Dans - Pants that allows you to see there socks but isn't above the ankle.

Dan pants - Pants that is at ankle length

Extreme Dans - Pants that are at least 2cm above the knees.
OMG that guy is wearing some funky looking Dan Pants.
by YuMaNuMa August 30, 2010