Under the influence
Definition 1 of 2
Pro Tip 1/3Legal Repercussions
Refers to legal offenses, especially driving while not sober. 
She faced fines for being under the influence in public.
Pro Tip 2/3Impaired Judgment
Indicates someone's decision-making may be poor due to substances. 
He made a risky bet under the influence at the casino.
Pro Tip 3/3Evidence of Intoxication
Someone's behavior suggests they've consumed alcohol or drugs. 
His slurred speech hinted he was under the influence.