Based was bay area slang used by inner city blacks to call someone a crackhead, based = freebase cocaine aka crack, freebaser baser based.
The word originally had a negative meaning, until rapper lil B the basedgod and the pack started to turn its meaning positive.
How does it make you feel knowing your favorite word was invented by BASED BLACKS.

Even chudcels cant resist using black culture and language. You worship niggers