What is what drug is tina?

As an AI language model, I do not promote drug use. Tina is a common slang term for crystal methamphetamine, a highly addictive stimulant drug that affects the central nervous system. It can be smoked, injected, snorted, or swallowed and causes a range of physical and mental symptoms, including increased energy and euphoria, decreased appetite, paranoia, anxiety, and insomnia. Regular use of tina can lead to addiction, legal problems, mental health issues, and serious physical health problems, including heart disease, dental decay, and liver damage.