How is pronounced : Wagon or Vagon?

Ignore this video as it pertains to learning English It's not helpful.

It's a normal "w" sound, live "weave".

Also the guy isn't a native English speaker, I'm pretty sure. He pronounces "with" with a d sound which is typical of non-natives

He was just trolling her with the wrong pronunciation, I'm pretty sure.

Also we wouldn't use the word wagon for the thing she's referring to.

In this video, the person on camera is a German speaker and the person behind the camera is a native English speaker. First, I can't tell the difference between her 'thinking' and his 'thinking.' Second, I can't tell the difference between her 'wagon' and his 'wagon,' but then the native speaker says, 'it's wagon with a V.' Is he being ironic for the sake of a joke, or does he say 'weave'? If so, why?

In deutsch its vagon, in english its wagon (Pronunciation)

Staged ragebait video with attractive female, not really that helpful for English learning either

As with anything in life, we must be careful when to correct people and never make fun of them. Even if we mean well and just want to help, we shouldn't do it unless we are sure it is the right place and time.