A youth cult involving synthetic electronic dance music (house) and the taking of euphoric hallucinogens such as ecstasy and LSD (acid). This fashion, celebrated in clubs and large impromptu parties and with garish clothing and lighting effects, succeeded hip hop, rap and other move- ments in 1988. 'A-c-e-e-e-d!' (an elon- gated version of acid) was a rallying cry of celebrants, shouted and written on walls.