" grand jury "

 [ "grand jury" ]

1: In poker, three fours, trip fours, 4-4-

  * e.g.,  ... I lost to the grand jury. 

 [ "Delusions of Grand Jury" ]

1: The thing that a court jury demonstrates when they make decisions and rulings based more on beliefs outside of law, or to appear more important than their jury position entails. It usually involves decisions based on facts that don't pertain to the actual charges in any way.

  * e.g.,  ... Everyone knew that Mr. Chang was a dangerous assassin, but the prosecution had no legal evidence whatsoever. Luckily, the jury showed delusions of grand jury by sentencing him to death. See in this one, the grand jury reference does make sense. 

 [ "Delusions of Grand Jury" ]

2: It doesn't have to be a grand jury. That just makes the pun work is all.

  * e.g.,  ... The jurors exhibited delusions of grand jury when they convicted the man solely on the basis that he liked to carve wooden figurines.