To Marek, is to down/ chug/ skull a drink in one attempt. Used in place of "cheers" when drinking with other people. The raising of glasses is accompanied with eye contact, followed by tapping the glass on the table before drinking.
Mitch: Oi, is everyone ready?
Mitch: Ok, Marek! (Raise glasses, eye contact, tap glasses on table, drink)
Jimmy: Corey you didn't Marek!
Corey: It's too cold!