gone under

gone definition

1. mod.
   and gone under. unconscious. : He's gone under. You can begin the procedure now.
2. mod.
   and gone under. alcohol or drug intoxicated. : Those chicks are gone—too much to drink. , Wow, he's really gone.
3. mod.
   cool; out of this world. (Typically real gone.) : This ice cream is gone, man, gone!