Disgrace/finish like an absolute shower
What is the meaning of the words "disgrace" and "absolute shower" in this sentence?
Neville: Man Utd were a disgrace
Sky Sports' Gary Neville:
"The first thing to say is that Manchester City were outstanding, particularly in the second-half.
"But at the end of the game, Manchester United finished like an absolute shower. They were a disgrace in the last 25 minutes.
If someone describes you as a disgrace then it is quite hard! A disgrace means to perform badly (people are ashamed of your performance).
An absolute shower means that the whole team were a disgrace (this is informal).