shame of it
the shame of it (all)
The shameful, regrettable, or unfortunate truth about someone or something. That's the shame of it, I'm afraid. One bad decision has ended up ruining his entire career. The shame of it all is that it had the potential of being a really great film, but it was ruined by studio meddling.
shame of it (all)
That is so shameful!; I am so embarrassed; I am shocked. (Considerable use jocularly or as a parody. Compare this with For shame!) John: Good grief! I have a pimple! Always, just before a date. Andy: The shame of it all! Tom: John claims that he cheated on his taxes. Bill: Golly! The shame of it!