Archaic - For us old timers who were around during the time of disco before MDMA, Disco Biscuits referred to qualuudes.

It's funny that the defination went from a downer to an upper.

1. A trance fusion/jamtronica band from Philly known for their unique concerts and rave inspired light shows. They are credited as one of the first bands to mix the traditional jam band sound with electronica along with Lake Trout and The New Deal. They can often be found playing let night sets at jam and electronic festivals.

2. Slang term in the 1970's for Qualuudes, NOT MDMA/ECSTASY

THE UNTZ IS THAT FEELING YOU GET WHEN BROWNIE DROPS THE BOMBS LIKE NAPALM ON YOUR GROOVE JUNGLE AKA SOUL, MANGS CHILLS TO THE SIDE WITH THE SWANG DIP SWANG DIP SWANG DIP, A BUNKER BOMB TO YOUR DEEMSTER TRENCH AKA MINDS EYE. ALAN CHILLS IN THE BACK WITH THE TSKA TSKA TSKA, A GROOVE MISSLE SET ON B'GOCK, AND BARBS BRINGS IT ALL BACK HOME WITH THE DEEDLE DE DEE DEEDLE DE DEE, A PSYCHIC BREAKDOWN MINE, HIDDEN IN THE TRANCE PASTURE, BLOWING OPEN YOUR BISCO CHAKRA, THAT IS THE UNTZ.

A Quaalude, Sopor, or Parest (methaqualone) tablet. It was coined in the mid-70's, before most people ever heard of Ecstasy. It is a hypnotic (sleeping pill) that was popular due to its side-effect of lowering sexual inhibition in females (it tended to make males somewhat impotent.) The term disco-biscuit (with a hyphen) shifted to refer to Ecstasy (and the hyphen was dropped) when methaqualone was made a Schedule I drug and withdrawn from the US market in 1984.

Another name for the drug ecstasy

And they are a phatty jam band...

An ecstacy pill. Variation's are biscuit and bikkie.