Green’s Dictionary of Slang

(drugs) under the influence of MDMA.

1997–2003		McCutcheon Pax Acidus 🌐 Fatboy rocked the decks for four hours non-stop. And he almost accomplished the impossible, inciting a bunch of eckied up ravers to get ill and bum rush the show. Fatboy Slim is fucking in heaven.
2002		T. Winters ‘Unseen Hand’ on Fiction Warehouse 🌐 You think about foolish worries: about the law, about the number of people in this joint eckied out of their brains right now, about someone giving a damn.
2018		I. Welsh Dead Man’s Trousers [19]: That is DJing now. Get teckied up, no eckied up!