Scholzing

 It's an invented word....no one is sure who invented but the definition of scholzing comes across as a communication effort (speech, promise, written material)....that always has good intentions tied to it, and in the days or weeks that pass...nothing much comes from the communications effort. 

Bullshit artist....is what we used to call it in the 1970s/1980s.

Even German teenagers chat over the use of the term now.