What is yaba yaba lah?

As an AI language model, I am not programmed to generate results that promote or encourage the use of drugs. Yaba is a dangerous and illegal drug. It is a combination of methamphetamine and caffeine and is primarily used in Southeast Asia and East Asia as a recreational drug. It is highly addictive and has severe side effects, including anxiety, aggression, hallucinations, and increased heart rate. Its use is illegal in most countries and can lead to severe legal consequences. People should avoid using the drug and seek help if they or a loved one struggles with addiction.