noun- Ukrainian term meaning 'dirty heroin' or filthy, home-crafted, bangable narcotic.
verb- 1. The injection of 'dirty heroin' (shirkaing/shirkaed).
Put in extra toilet water, Yuri, this batch of shirka is going to score us the mad vagina, yes?
Svetlana got so shirkaed, she tried to convince me and Oleh to go and mung some guy who had just been buried. Gross.