[The Village Girl]

Originally Posted by Skybo

Here are a few definitions from urbandictionary.com:

Boy Howdy:

Southern slang. An interjection. Often used as an expression of surprise for large quantities of something, or severity of something. "Boy howdy! Them pumpkins sure are big! How're we gonna carry 'em all, Ms. McGregor?"

An exclamation of enthusiastic agreement which can be used in both a genuine or sarcastic tone. In addition can used to add emphasis to a statement.

General expression/interjection, similar in usage to "wow," "oh, man," or "yep".

Or, Are you freaking kidding?