No way... / Wow... / Go on then... / Come on...
Expresses surprise, disbelief, or encouragement. Anda = no way/wow (surprise); anda ya = come off it; anda, hazlo = go on, do it. Very expressive.
—I got married. —No way! I can't believe it!
Go on, tell me more.
—Have you finished already? —Come off it! That soon?