Green’s Dictionary of Slang

disco n.

SE in slang uses

In compounds

disco biscuit (n.) (also disco burger) [its shape and the environment in which it is often consumed]

1. one who frequents discotheques.

2. a Qualuude (methaqualone).

3. [1990s+] (drugs) MDMA.

disco danny (n.)

[1980s] (US) a male fan and frequenter of nightclubs.

disco powder (n.)

[2000s] amphetamine sulphate.