Early on in the argument, it seems that after Pam Karlan gave an answer there was silence from the bench, and so she joked about reserving the rest of her time for rebuttal. Few could get away with that like Pam could.
And wondering if this is the first time "Hooters" has appeared in a SCOTUS oral argument: 
And Pam Karlan pushes back against Chief Justice Roberts' idea to leave this to Congress, and Judge Posner (in 7th Circuit's) argument for dynamic statutory interpretation
And then Pam had to deal with an apparently nonsensical hypothetical from Justice Breyer about "German policemen"
And in the end Pam stops midsentence when her time expires, and the joke about her reserving time for rebuttal early on leads to more laughter at the end.
What a loss that we don't have Pam Karlan as a Justice on the Supreme Court. I don't think I've met a smarter person in my life.
