Slang and Informal Speech Guide

Teach me slang and informal speech in [TARGET LANGUAGE].

Region/Country: [SPECIFIC REGION]
Age group of speakers I'll interact with: [TEENS/20s-30s/ALL AGES]
Context: [SOCIAL/ONLINE/WORK CASUAL]

Please provide:
1. Current popular slang (30 expressions):
   - The expression
   - Literal meaning
   - Actual usage
   - Example in context
   - Formality level (casual/very casual)
   - Age/group who uses it

2. Internet/texting slang (20 items)
3. Filler words and discourse markers
4. Informal pronunciations and reductions
5. Informal grammar patterns
6. Intensifiers and exclamations
7. Slang that's outdated (avoid sounding old)
8. Regional variations in slang
9. Slang to be careful with:
   - Potentially offensive
   - Only for specific groups
   - Easily misused

10. How slang changes (staying updated)
11. When NOT to use slang
12. Natural conversation incorporating slang