There is truth in wine
Possible interpretation: When people are drunk, what they say is often true. People often speak the truth when they lose their self-control.Note: truth (noun): what is factual; what is in accordance with reality | wine (noun): an alcoholic drink typically made from fermented grape juice
Origin: This proverb has Greek and Roman roots, and is often expressed in its Latin form: In vino, veritas.
If "there is truth in wine", somebody is most likely to lie when they are: