(Alternative) A brand of Ecstasy or MDMA pill that swept through the European club scene in the late nineties, stamped with the logo of the Mitsubishi manufacturing company. Notable for their unusually high quality and purity, also their nearly ubiquitous availability, these were widely considered to be responsible for rejuvinating the slightly weary clubbing scene. Also known as "Mitsi's".
The MDMA (active component) of these pills was rumoured to be manufactured by the ton in an ex-Soviet Bloc laboratory.
Gotta love those commies... In fact, on a couple of Mitsi's, you just gotta love everybody.. %-)