¿Que onda?
Mexican slang for what's up
A casual greeting, similar to 'what's up' or 'how's it going' in English.
¿Qué onda? ¿Cómo te va?
What's up? How are you doing?
Tu llamame, y ya vemo que onda
You call me, and then we see what's up.
¡Hola! ¿Qué onda? No te había visto.
Hello! What's up? I hadn't seen you.