1. Geil - Awesome or cool.
2. Oida - This term, short for "Oh, my God", can be an expression of surprise, dismay, or excitement.
3. Alter - Means buddy or pal, and is used in the same way as "dude".
4. Ich bin pleite - I am broke.
5. Das ist mir scheißegal - This means "I don't give a damn", or "I don't care at all".
6. Mal gucken - I'll see, or let me think about it.
7. Ey Man/Ey Frau - These are casual ways of addressing someone and can be used in different situations.
8. Krass - This can mean intense or extreme in a positive or negative sense.
9. Digga - Similar to "Alter" or "Dude", it's used to address or acknowledge someone.
10. Zoff - This word is used to describe an argument or disagreement, especially in a public or chaotic manner.
11. Feierabend - This term literally translates to "after the celebration" and is used to refer to the end of the workday or quitting time.
12. Pappnase - Literally "cardboard nose", this is a funny way to playfully tease or make fun of someone.
13. Hau ab - Means 'go away' or 'get lost', and can be used in an affectionate way among close friends.
14. Na klar - Definitely, absolutely, or sure!
15. Nix da - This is a quick and casual way to convey the meaning "no way!" or "no dice!"
Remember that slang can vary by region and over time, so you might encounter different words and phrases depending on where you are and who you're talking to.