not hold (one's) liquor(redirected from can't hold your liquor)
not hold (one's) liquor
To be easily and negatively affected by alcohol, especially becoming ill or unconscious. I'm sorry for acting like such a fool at the party—I don't even remember what happened. I guess I just can't hold my liquor. A: "Wow, Jennifer has had five cocktails and still seems totally sober." B: "No one ever said she couldn't hold her liquor."