Based on the hispanicization of the English verb "to watch"
Used as a salutation of parting.
You're hanging out at the beer joint with your buddy and/or your compadre. When it's time to go home you get up and take leave of your company by assuring them that you will see them later, in other words, that you will be watching out to spot them again.
"Hey, vato, I gotta run. Take it easy; ay te watcho"
Well its a godly looking human being kinda like hercules but higher up on the god chart has secret saiyan powers out powers Goku and all the other saiyans. WANCHO IS UNSTOPPABLE. Is the most sexy, amazing people ever to live. If you ever meet this kid you should just give all the money in your pocket to him just for being in his presence.