"You take your hat off."

[freymuth]

Is there supposed to be a light "w" after the "b", or is that a non-standard pronunciation?

[Windrammer]

It is the effect of broad consonants

[ShaneStova]

What is a "broad constant?"

[Windrammer]

A conconant is broad whenever an a, o or u stands attached to it. Whenever e or i is attached to a consonant it becomes slender.

[ShaneStova]

And like what are the standing rules for broad and slender consonants in this case thank you for your help

[freymuth]

Here's a link that gives a pretty good overview, without a lot of the academic terminology. Keep in mind that the four main dialects are often different from the Official Standard.