out of (one's) skull(redirected from out of their skull)
out of (one's) skull
Heavily intoxicated by drugs or alcohol, especially to the point of becoming unconscious, nonsensical, or out of control. I think someone might have spiked Jack's drink with some kind of drug, because he's out of his skull all of a sudden.
*out of one's skull
Sl. intoxicated. (*Typically: be ~; go ~.) Oh, man, I drank till I was out of my skull. Two beers and he went out of his skull.