adj. A level of drunkeness acheived successive to shit-faced, wasted, hammered, smashed, etc...
Side effects of intervention drunk may include but are not limited to: sexually transmitted disease, memory loss, vomiting and nausea, dizziness, whiskey dick, unorthodox sexual practices (bukkake parties), TV camera crews following you around and reaquainting with relatives who previously did not give a shit about you but now read to you sappy letters about how glorious you previously were.
Jim: My buddy is coming over and says he wants to get intervention drunk this weekend!
Neil: Are you sure that's safe? My brother did that once and now he's at Sunny Palms rehabilitation Center.