On Monday renowned attorney Lisa Blatt, who has argued more cases before the Supreme Court than any other woman in American legal history, defended a Maryland hospital system before the court.
The case centers on the Rooker-Feldman doctrine, which limits federal courts from overturning state court decisions, according to Courthouse News Service.
The hearing took a comedic turn when Blatt sang to the Justices. She quipped to justices, overturning the doctrine was "not happening" in an April case, prompting courtroom laughter.
Justice Samuel Alito responded sternly, telling Blatt, "Don't dare my colleagues."
Justice Elena Kagan expressed skepticism of Blatt's position, warning a ruling in her favor would send an "odd" message to lower courts. Justice Ketanji Brown Jackson raised concerns that opposing counsel Elizabeth Prelogar's proposed rule would discourage state court losers from exhausting appeals.
Blatt and Prelogar, the former top government lawyer who lost the abortion rights case, have collectively accumulated nearly a century of Supreme Court appearances.
Watch the video below.