A recent popular term to refer to the intention of becoming intoxicated from heavy alcohol consumption. Generally used by the lesser educated and/or millennial generation as the phrase itself "getting mortal" literally translates as "becoming exactly the same as i currently am" as, after all, everyone with the exception of John Wick is mortal.
Overexcited girl: "Tell you what guys I cant wait for tonight im getting mortal"
Educated friend: "You mean your immortal, you can't die?"
Overexcited girl: "What?"
Educated friend: "Twat."
Educated friend: "You mean your immortal, you can't die?"
Overexcited girl: "What?"
Educated friend: "Twat."
by Declaron EU-Darksorrow August 11, 2017