Really high and/or drunk. Feeling like you've lost your
mind. Derived from "
pickled" as in "my brain is in a pickle".
Pickled onions - onioned, get the
drift?
Rudeboi: "Yo, man what did you
get up to
last night?"
Stoner: "
Got completely onioned, mate"
Rudeboi: "Cool story, bro"