Technically, phones aren't allowed inside the Supreme Court.
Apparently, Justice Stephen Breyer forgot that rule and was reminded of his failures Tuesday as his phone went off, interrupting oral arguments and prompting "a lot of giggles," according to a Wall Street Journal reporter.
The case was Bristol-Myers Squibb Co . v. Superior Court of California.
Breyer was visibly embarrassed, according to a Washington Post reporter.
It's also not clear where he kept the phone.
It's not clear if justices are exempt from the no-phones rule.