Vaya means a lot of things : Basic meaning is (To go, or to Come)
* no vaya a ser que ...
no salgas no vaya a ser que venga : don't go out in case she comes
* ¡no te vayas! : don't go!
It is mostly used a part of the subjunctive. Where we give a command/ strong request or order :)
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When used as an INTERJECTION (comes from ver / ir)
1. To express surprise
* ¡vaya! -> well!
* ¡vaya! ¡ tú por aquí! -> fancy seeing you here!
* ¡vaya, vaya! no me esperaba eso de ti -> well, I certainly didn't expect that from you!
2. To express admiration
* ¡vaya moto! -> what a motorbike!
* ¡vaya si me gusta! -> you bet I like it!
* ¡vaya (un) amigo! (Irónico) -> some friend he is!
3. Express annoyance or disgust
* ¡vaya! -> oh no!
* ¡vaya, me equivoqué otra vez! -> oh, no, I've got it wrong again!
* ¡vaya con la dichosa cuestecita! -> so much for this being a little hill!, some little hill this is!
* ¡vaya por Dios! o ->
* ¡vaya, hombre! para una vez que compro gambas, me las dan pasadas -> can you believe it o honestly, the one time I buy some prawns, they're off! (peninsular Spanish)
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