https://www.youtube.com/watch?v=-a4EU0dPHWA
At least all we heard was the flush.
From CNN:
The case at issue concerned the Telephone Consumer Protection Act that prohibits unwanted calls to cellphones by use of an automated system. Challengers say one provision violates the Constitution. Lawyer Ramon Martinez, representing political groups challenging the law, was pressing his point when the offending flush occurred.
Martinez did not seem fazed or publicly notice the interruption.