This term was derived from the noted social trend of emos using pictures of Bats (:) in their msn messenger names
S.M: Jeez, J.R. why do you have to act like a bat all the time?
J.R: Aww c'mon guys...
A.I: Yeah stop living in Bat Country and join us normal people J.R: Aww...
Is a slang terms goths and deathrockers use for a friend. Fiend is also commonly used.
Deathrocker1: How was that Scarlet's Remains' show, bats?
Deathrocker 2: It was amazing! You should of been there bat!
Goth 1: It was pretty good, I'm going to buy their CD.
Deathrocker 1: I'm glad my bats liked them!