Opposite of square. Groovy is originally an expression from jazz, meaning musical, playable, as in a groovy record. The groove of the record has beat and soul. Something or someone groovy has beat and soul. The term was adopted by the musically inclined countercultures of beatniks and hippies.
Opposite of groovy. Unlike a round, long-playing vinyl record which has one playable groove on each side, a square record would not track a tone arm and cannot be played. There is no music and no soul in a square record. Something or something square just isn't with it, and lacks fun and liveliness.
Man, you don't dig this music? You are like really square.
Generic word for drugs of all kinds. The term comes from butyrate dope, which is a modeller's form of aircraft dope, or plasticised lacquer, which inhaled could cause altered states, as in huffingglue. Any model rocket builder who has painted with butyrate dope knows how strong its fumes are, even from a small can.