word invented in the early 80's during the SF revival through cinema and literature. 'PLASPIMKO' was re-used by a firm which build plastic toy ufo's, very similar to large plastic Pim's biscuits. Later, in the 90's, a Jap. actress named Miki Plaspimko went famous in a Science Porn Fiction film called 'UNW' ('Unidentified Naked Women'). Nowadays, the word is randomly used to describe either 'another' SF blockbuster, or what we also call a 'bimbo'. Example:
PLASPIMKO
Meaning of PLASPIMKO in English
Slang English vocab. Английский сленговый словарь. 2012