1. Slang is informal language that differs from standard language and is often specific to regions or subcultures. It is used for humor, metaphors, and shortening words.
2. The extent of slang usage varies widely across social, ethnic, economic, and geographic groups. Slang also refers informally to ideas related to violence, crime, drugs, and sex.
3. "Tinglish" refers to directly translating Thai sentences to English, resulting in funny grammar. It developed due to increased tourism in Thailand and lack of education.