A term used to describe anyone who has the following characteristics: lazy, good for nothing, cheap, always drunk, always sober, dancing with a hot chick, dancing with an ugly chick, plays video games all day, wears better clothing then you, wears worst clothing then you, obnoxious, says stupid things, does stupid things, hoards food, sleeps all day ...
RE: What is a hybrid mod? a hybrid is basically something without a 510 connection so a tube with an atomizer attached that you can only ever use that atty. there are hybrid atomizers (kinda) around such as the 3D for the nemesis and one for the chi you as well. that essentially turns it into a hybrid mod. unknown to me theres probably a few 510 adapters that turn hybrids into a standard mod as well lol
So, back to the original question about what MOD means. Well MOD is the ratio of the pitch circle diameter (PCD) to the number of teeth. DP for imperial gears is the number of teeth per one inch of pitch circle diameter. So whilst that may well answer the question, it doesn't really help appreciate the size of a gear.