The first word is dale (pronounced da-lay). This word can be interchanged for lots of meanings: "let's go," "ok," "no problem." The next word is che (pronounced ch-ay). This is what people call each other in a friendly way. It is similar to saying "Hey man!" in English.
Now you know some Argentinian slang!
Here are two videos for you too:
Morfando video: https://youtu.be/sesbuM9r_40
Argentinian Spanish video 2: https://youtu.be/mym_vGDYyz8
