 Puts me to shame, certainly. He's brilliant. But yeah, for those of you who don't know, let me explain. There are four cups traditionally drunk at the Passover meal. And you drink the fourth cup after you sing the Hallel Psalms, the Psalms of praise, for his great love is without end. Well, they went out of the Last Supper room singing the Hallel Psalms, which means they hadn't finished the fourth cup.