Babe: Affectionate term for female, now with slightly different meaning.

Baby: Similar to Babe.

Bad Acid: Poorly made LSD, probably cut with speed which causes a bad trip. Some people at Woodstock downed some bad acid and the crowd was warned about it, making the term instantly popular.

Bad Trip: An LSD trip that goes awry. Usually indicated by paranoia, or intense, uncontrollable feelings or rarely suicidal urges. Also used to describe any bad experience.