a brick in (one's) hat(redirected from brick in his hat)
a brick in (one's) hat
slang Said of someone who is drunk, usually with the verbs "have" or "got." A: "Don't mind him, he's just got a brick in his hat." B: "Seriously? It's only three o'clock, how is he drunk already?"
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.