To become inebriated either through 1) liquor or 2) promethezine or 3) both.
Commonly used with along with the phrase "smoked out".
Ivan: "JP said he brought a hoe home yesterday."
Koby: "Oh really, did he smash?"
Ivan: "Nah, he was already dranked out, son. He just fell asleep."
Ivan: "What you up to John?"
John: "Oh you already know, just gonna get smoked out and dranked out."