NOUN: A derogatory name used to describe the drunkest and most embarrassing member of your group of friends. Drinko is short for "Drinko the alcoholic clown".
Note: This term was born on the Jersey shore. Every summer shore house has their own Drinko.
"Dude, it's the first day of vacation; we've already seen you naked, you chatted up all our girls, you jumped off the second floor deck, and you pissed on a parked cop car. You are definitely this year's Drinko."